sam ✅🇬🇪

@sam@chven.us

I like , software, , , . Maybe other things too.
peertubehttps://toobnix.org/a/saba/video-channels
pixelfedhttps://pixelfed.sdf.org/saba
websitehttps://chven.us
HomeBodbe, Georgia
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sam ✅🇬🇪 »
@sam@chven.us

"When small men begin to cast big shadows, it means the sun is about to set." -- Lin Yutang

Smudge The Insult Cat 🐀 »
@SmudgeTheInsultCat@mas.to

(Old painting of a smiling woman holding a fan)  I just learned the professional way to say "I told you so": "This was identified early on as a likely outcome."

Alt...(Old painting of a smiling woman holding a fan) I just learned the professional way to say "I told you so": "This was identified early on as a likely outcome."

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sam ✅🇬🇪 »
@sam@chven.us

looking for a VPS hosted outside the U.S. I just need something for a few months while I move. I'll probably just need it for a very small website and this snac2 instance. I could just host my website on SDF, but I'd like to keep my snac server running.

AodeRelay boosted

ploum »
@ploum@mamot.fr

Snac2 is a simple database-less/javascript-free alternative to Mastodon:

codeberg.org/grunfink/snac2

It looks very nice to run your own server

There are some screenshots here:
codeberg.org/voron/snac-style

Is anybody using it?

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    Parade du Grotesque 💀 »
    @ParadeGrotesque@mastodon.sdf.org

    @ploum

    See bsd.cafe and @stefano - they have instances running on snac, and they seem pretty happy with it!

      ...

      ploum »
      @ploum@mamot.fr

      @ParadeGrotesque : I’ve probably heard about it through @stefano ’s blog. Very nice blog, I like it !

        Justine Smithies »
        @justine@snac.smithies.me.uk

        I'm using it and I'm extremely happy with it.

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          sam ✅🇬🇪 »
          @sam@chven.us

          I'm using it and I like it. It's easy to set up and update.

            khm »
            @khm@hj.9fs.net

            I run an instance with about twenty users on it. If it weren't for snac I would not be on the fediverse at all.

              no44 »
              @no44@hj.9fs.net

              It's really nice, super fast, elegant design.

                Pif 🇪🇺 »
                @pif@snac.yannicka.fr

                Je l'utilise car je voulais quelque chose de simple à installer, sans base de données, et être maitre de mes données. C'est excellent, j'adore :)

                C'est pas parfait car snac n'a pas toute l'API de Mastodon, donc parfois faut réussir à se débrouiller autrement, et on peut rater des messages. Mais je m'en accommode facilement.

                  Santiago Lema »
                  @santiago@masto.lema.org

                  @ploum I haven’t migrated my personal instance yet I run it on n4no.org . It’s also perfect when you just want to setup an independent bot on its own domain.

                    Red Rozenglass »
                    @rozenglass@fedi.dreamscape.link

                    @ploum@mamot.fr I enjoy snac, very light, and works well enough for me. There are a few inconveniences here and there, but I'm slowly patching them up on my instance, and upstreaming them when appropriate. Might want to throw https://git.freesoftwareextremist.com/bloat as a frontend to snac for a slightly more "modern" experience, but I usually just use snac plain. If you face any problems or have more questions, I may be able to help :)

                      AodeRelay boosted

                      Ворон »
                      @voron@no.run.place

                      I also use and I really like it. 🙋

                      By the way, according to FediList, there are 226 Instances in the fediverse!

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                        AodeRelay boosted

                        The Real Grunfink »
                        @grunfink@comam.es

                        In fact, @voron@no.run.place is one of the responsibles of looking beautiful and professional due to their awesome CSS themes.

                        CC: @ploum@mamot.fr

                          jase »
                          @jase@tail-f.journalctl.uk

                          @ploum@mamot.fr

                          Snac2 is awesome

                          I run it on Debian stable

                          Its easy to set up using Caddy and the Snac2 package from bookworm-backports

                          Updates via

                          sudo apt update && sudo apt upgrade

                          More detail here

                          https://journalctl.uk/2024/10/20/debian-running-snac2-on-caddy/

                            ltning »
                            @ltning@pleroma.anduin.net

                            @ploum It runs on ridiculously low-end hardware, too. One of my #snac2 instances runs on a 486. :D

                              ...

                              gyptazy »
                              @gyptazy@mastodon.gyptazy.com

                              Right, it even runs without any issues on slow hardware like my board.

                              If anyone is looking for compiled bins of snac for
                              - cdn.gyptazy.com/files/os/debia
                              - cdn.gyptazy.com/files/os/freeb

                              @ltning @ploum

                                Tim Chase »
                                @gumnos@mastodon.bsd.cafe

                                @ltning @gyptazy
                                This delights me in irrational ways. Especially compared to the "you want to run Mastodon? It wants 4+GB of RAM, a gazillion different processes, docker containers, and scads of disk-space", is refreshingly svelte

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                                  AodeRelay boosted

                                  gyptazy »
                                  @gyptazy@mastodon.gyptazy.com

                                  Not only a million of different processes but also (hopefully maintained) libraries and dependencies. snac simply requires ssl and curl - ezyyyy

                                  @gumnos @ltning

                                    AodeRelay boosted

                                    Pierre-Alain TORET »
                                    @daftaupe@snac.toret.fr

                                    I'm using on a powered 4 along with other services of mine that I . So far it's only me on the instance. Maybe my wife will join later, who knows...

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                                      Paul Wilde 😺 (snac2 acct) »
                                      @paul@snac.notnull.space

                                      @daftaupe@snac.toret.fr @ploum@mamot.fr hello fellow on single user instance!
                                      No raspberry pi for mine though, running as a Jail on a NUC

                                        wasteland_rider »
                                        @wasteland_rider@dont-panic.quest

                                        @ploum@mamot.fr @grunfink@comam.es Yep, I do for my not so active presence in Fediverse.

                                          Parade du Grotesque 💀 »
                                          @ParadeGrotesque@mastodon.sdf.org

                                          The weather outside is beautiful, but I am feeling sicker and sicker.

                                          Slight fever, joint aches, etc.

                                          Thank Cthulhu for work from home days.

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                                          stu »
                                          @fedistu@mastodon.sdf.org

                                          @ParadeGrotesque Hope you feel better soon

                                            garpu »
                                            @garpu@mastodon.online

                                            @ParadeGrotesque the flu that's going around is brutal. hope you feel better soon!

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                                              sam ✅🇬🇪 »
                                              @sam@chven.us

                                              hope you feel better soon! I've had cough and joint pain for the past week, but feeling a little better now!

                                                Your friendly 'net denizen »
                                                @cstanhope@social.coop

                                                @ParadeGrotesque I hope whatever it is mild and your recovery is swift.

                                                  🍋 Superball ☀️ »
                                                  @superball@norcal.social

                                                  So I’m freshly on Linux (Mint) and would like to manage the music on my iShuffle, to which I have an emotional attachment despite a desire to get away from Apple in general. I’d like to access my iTunes library but am willing to let it go and make a fresh start if need be—although I’m guessing iTunes is required for use of the iShuffle . . . ? I see there are ways to put iTunes on Linux, but at a glance it looks complicated. What’s my best approach?

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                                                    sam ✅🇬🇪 »
                                                    @sam@chven.us

                                                    I think rhythmbox had some ipod sync capability at one time. It's been a very long time since I used one.

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                                                      🍋 Superball ☀️ »
                                                      @superball@norcal.social

                                                      @sam
                                                      Okay, thank you! My brain is fried for the night but I’ll look into it when it’s not. 😜

                                                        AlexLunaView »
                                                        @alexlunaview@mastodon.social

                                                        A very ambitious European High Speed Rail network planned by the Commission. One ticketing app, one Railway Area. This would be amazing. From Lisbon to Luhansk with one ticket

                                                        Prof. Sam Lawler »
                                                        @sundogplanets@mastodon.social

                                                        OH yeah love ending my workday with a surprise National Geographic interview about the Saturn moons that I helped discover by accidentally pointing the CFHT telescope at Saturn. Definitely my most scientifically productive whoopsie ever.

                                                        128!!!! New!!! MOONS!!

                                                        Happy Moon Day!

                                                        minorplanetcenter.net/mpec/K25

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                                                        AkaSci 🛰️ »
                                                        @AkaSci@fosstodon.org

                                                        @sundogplanets
                                                        What defines a moon?
                                                        Is there a minimum size limit or some other property?
                                                        Obviously, the small fragments that make up Saturn's rings don't count as moons.

                                                        Do we have orbital parameters for these new moons?
                                                        Names?

                                                          ...

                                                          Adam Shostack »
                                                          @adamshostack@infosec.exchange

                                                          @AkaSci @sundogplanets Obi-wan defines what a moon is. 😇

                                                            Prof. Sam Lawler »
                                                            @sundogplanets@mastodon.social

                                                            @AkaSci Paper here with some of them (I'm not a co-author, just an observer, whoopsie) arxiv.org/pdf/2503.07081

                                                            There's another paper coming soon, possibly tomorrow.

                                                            All led by Edward Ashton, a very talented postdoc at ASIAA!

                                                              ...

                                                              Prof. Sam Lawler »
                                                              @sundogplanets@mastodon.social

                                                              @AkaSci And yeah, this is definitely going to push to some kind of Pluto situation where the IAU is going to have to define a moon!

                                                                ...

                                                                Joe »
                                                                @not2b@sfba.social

                                                                @sundogplanets @AkaSci I vaguely recall that the reporting on Sputnik back in the late 50s said things like "Earth has a second moon now". But assuming we don't want to say that Saturn has billions of moons (in the rings) I guess there has to be a limit.

                                                                  Eye »
                                                                  @grb090423@mastodon.social

                                                                  @sundogplanets

                                                                  Excellent! Hope awesome is this!?! 👏👏👍

                                                                    Martin from Toronto »
                                                                    @mcourcel@allovertheplace.ca

                                                                    @sundogplanets Hehehe lol! Quite a whoopsy. Love it!

                                                                      Prof. Sam Lawler »
                                                                      @sundogplanets@mastodon.social

                                                                      To be very clear, I am really truly only involved in this discovery by accidentally pointing the telescope at Saturn when I was trying to look for TNOs. Edward Ashton, Brett Gladman, Mike Alexandersen, and Jean-Marc Petit did all the work!

                                                                      arxiv.org/pdf/2503.07081

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                                                                      Zen Heathen 🇨🇦 »
                                                                      @ZenHeathen@beige.party

                                                                      @sundogplanets SIXTY-FOUR new Saturn moons?!?! That's *amazing*.

                                                                        AI6YR Ben »
                                                                        @ai6yr@m.ai6yr.org

                                                                        @sundogplanets Better than causing people to think there are aliens in specific galaxies because you were heating up your lunch in the microwave?

                                                                          AodeRelay boosted

                                                                          Prof. Sam Lawler »
                                                                          @sundogplanets@mastodon.social

                                                                          Someone already updated Wikipedia! en.wikipedia.org/wiki/Moons_of

                                                                          I love wikipedians.

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                                                                          Prof. Sam Lawler »
                                                                          @sundogplanets@mastodon.social

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                                                                          J. Steven York RESISTS »
                                                                          @jstevenyork@mastodon.social

                                                                          @sundogplanets
                                                                          Somebody should tell Saturn they're just making a fool of themselves...

                                                                            Prof. Sam Lawler »
                                                                            @sundogplanets@mastodon.social

                                                                            ...

                                                                            Ehay2k »
                                                                            @Ehay2k@mastodon.social

                                                                            @sundogplanets

                                                                            Oh, I hope Dr. Tyson doesn't relegate any of them to a lesser status like he did with Pluto!!

                                                                            😉
                                                                            .

                                                                              Prof. Sam Lawler »
                                                                              @sundogplanets@mastodon.social

                                                                              I've had like 3 co-workers text or email me about this interview this morning, so I guess I should share it. This is the one that I thought was for radio so I didn't even brush my hair. New rule for myself: always assume it's a video interview!

                                                                              Came out pretty good though, overall I'm happy with it

                                                                              cbc.ca/player/play/video/9.668

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                                                                              Eye »
                                                                              @grb090423@mastodon.social

                                                                              @sundogplanets

                                                                              Brilliant! This is an excellent piece 👏👍

                                                                              What's so good about your way of talking to people is that you come across as so approachable, so human, and that you ABSOLUTELY KNOW what you're talking about because you have researched and researched and researched!

                                                                              Your words are worth listening to/reading 👍

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                                                                                Kelly Lepo boosted

                                                                                Prof. Sam Lawler »
                                                                                @sundogplanets@mastodon.social

                                                                                Amazingly talented fediverse astrophotographers: gorgeous, perfectly exposed and processed telescope images

                                                                                Me, a professional astronomer: accidentally points a 4 meter telescope at Saturn for a series of 5 minute exposures

                                                                                A really messy black and white image with an extremely bright, overexposed thing in the centre and bright vertical smudges bleeding up and down because all the pixels have filled with electrons and spilled over. This is a tiny part of a Canada-France-Hawaii Telescope Megacam full camera field.

                                                                                Alt...A really messy black and white image with an extremely bright, overexposed thing in the centre and bright vertical smudges bleeding up and down because all the pixels have filled with electrons and spilled over. This is a tiny part of a Canada-France-Hawaii Telescope Megacam full camera field.

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                                                                                Derick Rethans »
                                                                                @derickr@phpc.social

                                                                                @sundogplanets Maybe you found some more moons. 😁

                                                                                  Alice Atmega »
                                                                                  @chaotin@corteximplant.com

                                                                                  @sundogplanets this looks pretty cool though!

                                                                                    Zombie Gopher »
                                                                                    @ZombieGopher@gamepad.club

                                                                                    @sundogplanets Saturn was just rude for getting in the way of your pictures 😁

                                                                                      Fuse »
                                                                                      @TimePencil@infosec.exchange

                                                                                      @sundogplanets
                                                                                      Well... I guess they're not going to let you point the JWST anytime soon...

                                                                                        ...

                                                                                        Jason Nishiyama »
                                                                                        @evilscientistca@mstdn.ca

                                                                                        @sundogplanets Science isn't always cosmetically pretty!

                                                                                          JamesK »
                                                                                          @JamesK@sfba.social

                                                                                          @sundogplanets That is spectacular!

                                                                                            Richard Hendricks »
                                                                                            @hendric@astronomy.city

                                                                                            @sundogplanets I'm sure a little Russ Croman magic in PixInsight will clean that right up! 🪐

                                                                                              Knud Jahnke »
                                                                                              @knud@mastodon.social

                                                                                              @sundogplanets

                                                                                              During my first own observing run (ESO Danish 1.5m telescope on La Silla), which I meticulously prepared, I only learned mid 1st night that I was expected to focus the telescope.

                                                                                                ...

                                                                                                Prof. Sam Lawler »
                                                                                                @sundogplanets@mastodon.social

                                                                                                @knud oh nooooo! That makes me feel better.

                                                                                                  Chris Marquardt »
                                                                                                  @chrismarquardt@chaos.social

                                                                                                  @sundogplanets So this Saturn photobomb was instrumental in the new moons discovery? 🥰 As a photographer I find this incredibly delightful. As a photography podcaster, I wish I could, in good conscience, steal 20 minutes of your valuable time so you could tell me and my audience of photo nerds about it.

                                                                                                    Ms. Que Banh »
                                                                                                    @PhoenixSerenity@beige.party

                                                                                                    @sundogplanets 🤣 It could still be an album cover!

                                                                                                      Play Ball and Fight Fascists »
                                                                                                      @cafechatnoir@mastodon.social

                                                                                                      @sundogplanets

                                                                                                      That would make a wicked album cover.

                                                                                                        Mr. Teatime »
                                                                                                        @Mr_Teatime@social.tchncs.de

                                                                                                        @sundogplanets
                                                                                                        I love the stark contrast in that image.
                                                                                                        Some may find it overly abstract, but I think if photography can be art then there's no point in complaining about "unrealistic" looks.

                                                                                                        The interpretation of the subject reminds me of 1980s video games, many of which, fittingly, were set in space.

                                                                                                          Code of Amor 💘 »
                                                                                                          @codeofamor@social.codeofamor.net

                                                                                                          @sundogplanets okay the goat selfie is an instant follow - came for astronomy, stayed for goat selfies

                                                                                                            bjb »
                                                                                                            @bjb@fosstodon.org

                                                                                                            @sundogplanets
                                                                                                            "Accidentally" : -) If I was a telescope-managing astronomer, the telescope would "accidentally" be pointing at Saturn regularly. I'm kinda partial to Saturn and it's rings.

                                                                                                              Pete »
                                                                                                              @philpetree@mastodon.social

                                                                                                              @sundogplanets Nothing wrong with plain old fashioned luck!

                                                                                                              Congrats on the interview!

                                                                                                                simonbp »
                                                                                                                @simonbp@social.linux.pizza

                                                                                                                @sundogplanets Irregular moons are the most interesting giant planet satellites and that is a hill I will die on

                                                                                                                  patcanfield »
                                                                                                                  @patcanfield@mastodon.social

                                                                                                                  @sundogplanets Genius in the errors! Goddess in (whatever you do Normally) or, -employed

                                                                                                                    trainguyrom »
                                                                                                                    @trainguyrom@techhub.social

                                                                                                                    @sundogplanets sounds like some new KSP content is in order! They have a lot of planters bodies to add since their last update now!

                                                                                                                      RejZoR »
                                                                                                                      @rejzor@mastodon.social

                                                                                                                      @sundogplanets Saturn was like... screw you humans, you don't have enough deities to name all my moons! Here's 128 more lol

                                                                                                                        Voracious Reader »
                                                                                                                        @lnlyisol@mastodon.social

                                                                                                                        @sundogplanets

                                                                                                                        Are you going to name all the new moons "Prof. Sam Lawler", like we want all the asteroids named "Prof. Sam Lawler"? 🤪

                                                                                                                          Aaron 🖖 »
                                                                                                                          @a@beige.party

                                                                                                                          @sundogplanets Congratulations on your slight error! Incredible work! 🌝

                                                                                                                            Mathias Hasselmann »
                                                                                                                            @taschenorakel@mastodon.green

                                                                                                                            @sundogplanets The value of accidents and toying for science and society in general is greatly underestimated.

                                                                                                                              AkaSci 🛰️ »
                                                                                                                              @AkaSci@fosstodon.org

                                                                                                                              The largest camera ever built for astrophysics (3200-megapixels, >3000 kg) was installed this week at the Rubin Observatory at Cerro Pachón in Chile.

                                                                                                                              The Legacy Survey of Space and Time (LSST) camera, the final major component of the Rubin Observatory's Simonyi Survey Telescope, was transported to the summit in May 2024.

                                                                                                                              After a few more months of testing, first light is expected around 4 Jul 2025.

                                                                                                                              noirlab.edu/public/news/noirla
                                                                                                                              lsst.org/about/project-status

                                                                                                                              1/n

                                                                                                                              The NSF–DOE Vera C. Rubin Observatory team installing the LSST Camera on the Simonyi Survey Telescope in March 2025.

Credit: RubinObs/NOIRLab/SLAC/NSF/DOE/AURA/B. Quint
Source: https://noirlab.edu/public/images/noirlab2511m/

                                                                                                                              Alt...The NSF–DOE Vera C. Rubin Observatory team installing the LSST Camera on the Simonyi Survey Telescope in March 2025. Credit: RubinObs/NOIRLab/SLAC/NSF/DOE/AURA/B. Quint Source: https://noirlab.edu/public/images/noirlab2511m/

                                                                                                                                ...

                                                                                                                                AkaSci 🛰️ »
                                                                                                                                @AkaSci@fosstodon.org

                                                                                                                                Here is a fascinating time-lapse video of the LSST Camera being installed on the Simonyi Survey Telescope at the Vera C. Rubin Observatory.

                                                                                                                                "The team on the summit used Rubin’s vertical platform lift to move the LSST Camera up to the telescope floor onto a transport cart. Following a carefully planned procedure, the team then used a custom lifting device to carefully position and secure the LSST Camera on the telescope."

                                                                                                                                youtube.com/watch?v=RmRwhZ3k8-
                                                                                                                                Credit: RubinObs/NOIRLab/SLAC/NSF/DOE/AURA
                                                                                                                                2/n

                                                                                                                                ...

                                                                                                                                AkaSci 🛰️ »
                                                                                                                                @AkaSci@fosstodon.org

                                                                                                                                The objectives of the Vera C. Rubin Observatory include -
                                                                                                                                • Probing dark energy and dark matter
                                                                                                                                • Taking an inventory of the solar system
                                                                                                                                • Exploring the transient optical sky
                                                                                                                                • Mapping the Milky Way

                                                                                                                                The LSST will image the entire visible sky every 3-4 nights, allowing it to detect objects that change in brightness or position and to discover billions of new stars and galaxies.

                                                                                                                                By comparison, SPHEREx will take 6 months for a survey of the full sky, with spectra.

                                                                                                                                lsst.org/about
                                                                                                                                3/n

                                                                                                                                The Vera C. Rubin Observatory telescope mount in November 2023

Credit: Rubin Observatory/NSF/AURA/A. Alexov
Source: https://noirlab.edu/public/images/rubin-TMA-1-CC/

                                                                                                                                Alt...The Vera C. Rubin Observatory telescope mount in November 2023 Credit: Rubin Observatory/NSF/AURA/A. Alexov Source: https://noirlab.edu/public/images/rubin-TMA-1-CC/

                                                                                                                                ...

                                                                                                                                AkaSci 🛰️ »
                                                                                                                                @AkaSci@fosstodon.org

                                                                                                                                The Rubin Legacy Survey of Space and Time LSST Camera is the largest camera ever constructed for astronomy. It is a large-aperture, wide-field optical camera, capable of viewing light from the near UV to near infrared wavelengths.

                                                                                                                                Length: 4.5 m
                                                                                                                                Height: 1.65 m
                                                                                                                                Weight: 2,800 kg
                                                                                                                                Pixels: 3.2 billion
                                                                                                                                Wavelength: 0.32–1.06 μm
                                                                                                                                Filters: 6 (u-g-r-i-z-y)
                                                                                                                                Field of view = 3.5° (moon = 0.5°)
                                                                                                                                Operating temperature: -100°C

                                                                                                                                www6.slac.stanford.edu/lsst
                                                                                                                                lsst.org/about/camera/features
                                                                                                                                4/n

                                                                                                                                A schematic of the LSST camera, with size comparison with a human being.

                                                                                                                                Alt...A schematic of the LSST camera, with size comparison with a human being.

                                                                                                                                ...

                                                                                                                                AkaSci 🛰️ »
                                                                                                                                @AkaSci@fosstodon.org

                                                                                                                                The focal plane of the Vera C. Rubin telescope consists of 189 4kx4k charge-coupled device (CCD) sensors, arranged in a total of 21 3-by-3 square arrays. The system is cooled to about -100 °C to minimize noise.

                                                                                                                                The 3.5° field of view of the 64 cm wide array is 40 times the area of the full moon in the sky.

                                                                                                                                Camera Data Rates: ~3.2 GBytes/sec peak raw data 😲
                                                                                                                                1 pixel = 16 bits (raw)
                                                                                                                                Pixels: 3.2 billion
                                                                                                                                Detector read-out time: 2 sec

                                                                                                                                flickr.com/photos/slaclab/with
                                                                                                                                www6.slac.stanford.edu/lsst

                                                                                                                                5/n

                                                                                                                                1. Pic othe LSST camera focal plane and detectors during assembly and testing
Credit: Jacqueline Orrell/SLAC National Accelerator Laboratory
Source: https://www.flickr.com/photos/slaclab/50212763208/

2. Schematic of LSST focal plane and detectors
Source: https://www6.slac.stanford.edu/lsst

                                                                                                                                Alt...1. Pic othe LSST camera focal plane and detectors during assembly and testing Credit: Jacqueline Orrell/SLAC National Accelerator Laboratory Source: https://www.flickr.com/photos/slaclab/50212763208/ 2. Schematic of LSST focal plane and detectors Source: https://www6.slac.stanford.edu/lsst

                                                                                                                                  ...

                                                                                                                                  Anthony Horton »
                                                                                                                                  @spacelizard@aus.social

                                                                                                                                  @AkaSci A veritable firehose of data. The project as a whole has, quite reasonably, been described as a high performance computing project with a telescope on the side. The telescope and camera are undeniably impressive, but the data side of things is at least as ambitious.

                                                                                                                                  Sifting through that flood of images and automatically identifying, categorising and cataloguing vast numbers of astronomical objects/events, flagging particularly interesting ones for further investigation, doing so as fast as the data is coming in, and with sufficient accuracy that the astronomers aren't swamped with false positives/misidentifications, is a huge challenge.

                                                                                                                                    AkaSci 🛰️ »
                                                                                                                                    @AkaSci@fosstodon.org

                                                                                                                                    The Vera C. Rubin Observatory Simonyi Survey Telescope consists of 3 aspheric mirrors: an 8.4-m primary mirror M1, a 3.5-m convex secondary mirror M2, and a 5.0-m tertiary mirror M3.

                                                                                                                                    The primary and tertiary mirrors are fabricated from a single piece of glass.The secondary mirror (M2) is the largest convex mirror ever made.

                                                                                                                                    Note the location of the 3 ton LSST camera perched below the high secondary mirror.

                                                                                                                                    lsst.org/about/tel-site/optica

                                                                                                                                    6/n

                                                                                                                                    1. Schematic of the mirror assembly and optical path of the Rubin Observatory.
The hole in the tertiary mirror is used to mount equipment for maintaining precise control of Rubin Observatory's optical alignment.

2. Graphic of the assembled telescope.

                                                                                                                                    Alt...1. Schematic of the mirror assembly and optical path of the Rubin Observatory. The hole in the tertiary mirror is used to mount equipment for maintaining precise control of Rubin Observatory's optical alignment. 2. Graphic of the assembled telescope.

                                                                                                                                      ...

                                                                                                                                      AkaSci 🛰️ »
                                                                                                                                      @AkaSci@fosstodon.org

                                                                                                                                      Here is a fascinating video of the journey of the 3-ton LSST Camera from SLAC National Accelerator Laboratory in California to Rubin Observatory on the summit of Cerro Pachón in Chile. The camera arrived on the summit on May 16, 2024.

                                                                                                                                      The video also shows the rugged and beautiful site of the observatory and pays homage to the engineers and technicians involved in the move.

                                                                                                                                      youtube.com/watch?v=Cbhl1bysCA
                                                                                                                                      Credit: RubinObs/NSF/AURA/S. Deppe/O. Bonin, T. Lange, M. Lopez, J. Orrell (SLAC National Lab)
                                                                                                                                      7/n

                                                                                                                                      📌 0 ★ 0 ↺

                                                                                                                                      sam ✅🇬🇪 »
                                                                                                                                      @sam@chven.us

                                                                                                                                      "When small men begin to cast big shadows, it means the sun is about to set." -- Lin Yutang

                                                                                                                                      We're all gonna die ☄ » 🤖
                                                                                                                                      @eschaton@comam.es

                                                                                                                                      Asteroids with a remarkable probability of crashing into Earth

                                                                                                                                      Asteroid name: 2010 RF12
                                                                                                                                      Probability: 10.24%
                                                                                                                                      Impact date: 2095-09-05.99

                                                                                                                                      Asteroid name: 2017 WT28
                                                                                                                                      Probability: 1.10%
                                                                                                                                      Impact date: 2104-11-24.69

                                                                                                                                      Source: NASA/JPL Sentry Data API

                                                                                                                                      Astroland 🔭 »
                                                                                                                                      @astroland@mastodon.social

                                                                                                                                      Astronomie foto van de dag: Light Pillar over Erupting Etna. Fotoinfo: apod.nasa.gov/apod/ap250224.ht Foto Credits:
                                                                                                                                      Davide Caliò

                                                                                                                                        Parade du Grotesque 💀 »
                                                                                                                                        @ParadeGrotesque@mastodon.sdf.org

                                                                                                                                        Your weird picture of Paris for the day... The smurfette as Mona Lisa, done as a mosaic.

                                                                                                                                        A mosaic of colored squares, representing a dark haired smurfette as Mona Lisa, complete with the classic pose of the original and the background representing nature. 

The mosaic is framed like a painting on a white wall, with bits and pieces of other street art and tags around it.

                                                                                                                                        Alt...A mosaic of colored squares, representing a dark haired smurfette as Mona Lisa, complete with the classic pose of the original and the background representing nature. The mosaic is framed like a painting on a white wall, with bits and pieces of other street art and tags around it.

                                                                                                                                        ...

                                                                                                                                        Luke »
                                                                                                                                        @luke@social.sdfeu.org

                                                                                                                                        @ParadeGrotesque assumed this was by Space Invader who does loads of mosaic street art in Paris but can’t find it online.

                                                                                                                                          ...

                                                                                                                                          Parade du Grotesque 💀 »
                                                                                                                                          @ParadeGrotesque@mastodon.sdf.org

                                                                                                                                          @luke

                                                                                                                                          Nope, not Space Invaders. There is another guy who does things more in that style, but I can't find his name online right now.

                                                                                                                                          Space Invaders does smaller thing than this one, which was something 1.2m across.

                                                                                                                                            ...

                                                                                                                                            Luke »
                                                                                                                                            @luke@social.sdfeu.org

                                                                                                                                            @ParadeGrotesque Nice! It’s cool AF

                                                                                                                                              ICM »
                                                                                                                                              @icm@mastodon.sdf.org

                                                                                                                                              Did you know that SDF offers access to 23 vintage computers through our Remote Systems program? We're looking for your help in continuing to offer this access as well as expand it. What systems would you like to have access to?

                                                                                                                                              To support SDF Vintage Systems, please visit icm.museum/join.html

                                                                                                                                              The SDF Remote Vintage Systems menu

                                                                                                                                              Alt...The SDF Remote Vintage Systems menu

                                                                                                                                              The SDF Remote Vintage Systems menu

                                                                                                                                              Alt...The SDF Remote Vintage Systems menu

                                                                                                                                              archive boxes at SDF Vintage Systems and an assortment of our remote systems.

                                                                                                                                              Alt...archive boxes at SDF Vintage Systems and an assortment of our remote systems.

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                                                                                                                                                sam ✅🇬🇪 »
                                                                                                                                                @sam@chven.us

                                                                                                                                                ...

                                                                                                                                                DistroWatch »
                                                                                                                                                @distrowatch@mastodon.social

                                                                                                                                                @murena has launched its first tablet running the /e/OS operating system: distrowatch.com/dwres.php?reso

                                                                                                                                                  ...
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                                                                                                                                                  sam ✅🇬🇪 »
                                                                                                                                                  @sam@chven.us

                                                                                                                                                  I'm laughing at the price!

                                                                                                                                                  CC: @murena@mastodon.social

                                                                                                                                                    ...

                                                                                                                                                    The Real Grunfink »
                                                                                                                                                    @grunfink@comam.es

                                                                                                                                                    Hi. I was feeling apocalyptic the other day and programmed this bot: @eschaton@comam.es

                                                                                                                                                    It gives a daily report of those asteroids with a reasonable probability of crashing into Earth, in case you are not already afraid enough of the future. Of course, using , what else.

                                                                                                                                                    It takes its data from a very cool NASA site, so (again) in these days of uncertanty, I'm not sure how long will it work.

                                                                                                                                                    Everyone, take care, and have a great week.

                                                                                                                                                      ...

                                                                                                                                                      Brassica-boy now in #F9CBD3 »
                                                                                                                                                      @hastur@hackers.town

                                                                                                                                                      @grunfink @eschaton
                                                                                                                                                      Fastest follow ever!

                                                                                                                                                        ...
                                                                                                                                                        AodeRelay boosted

                                                                                                                                                        The Real Grunfink »
                                                                                                                                                        @grunfink@comam.es

                                                                                                                                                        Fastest follow ever!
                                                                                                                                                        😆

                                                                                                                                                          1 ★ 0 ↺

                                                                                                                                                          sam ✅🇬🇪 »
                                                                                                                                                          @sam@chven.us

                                                                                                                                                          I just saw this and then your post:

                                                                                                                                                          CC: @eschaton@comam.es

                                                                                                                                                            sabunia »
                                                                                                                                                            @sabunia@mastodon.social

                                                                                                                                                            If you are not watching, what is going on in , you should start! and get all the information you can. This is a literal fight for and by Georgian people. This is the showdown of this Generation against the and . is unfolding.

                                                                                                                                                              ...

                                                                                                                                                              George Takei 🏳️‍🌈🖖🏽 »
                                                                                                                                                              @georgetakei@universeodon.com

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                                                                                                                                                              Debra Shannon »
                                                                                                                                                              @debrashannon@mastodon.social

                                                                                                                                                              @georgetakei aw man, someone else I will never listen to again. No apology

                                                                                                                                                                cqd_sos »
                                                                                                                                                                @cqd_sos@mastodon.online

                                                                                                                                                                @georgetakei
                                                                                                                                                                Isn't the US renowned for being an ask-for-forgiveness-instead-of-permission country?

                                                                                                                                                                  GJ Groothedde 🇪🇺 »
                                                                                                                                                                  @Eetschrijver@mastodon.social

                                                                                                                                                                  @georgetakei What I make of it is that I'm absolutely shocked by the apparent number of fellow travelers in America.

                                                                                                                                                                    Ajay Cyanide »
                                                                                                                                                                    @AjayCyanide@mstdn.social

                                                                                                                                                                    @georgetakei an apology as empty as any MAGA lie.

                                                                                                                                                                      Winjay »
                                                                                                                                                                      @winjay@universeodon.com

                                                                                                                                                                      @georgetakei That's not an apology. Her actions betrayed their trust. She took the money from a monster, then told people he's literally hurting "I'm sorry you feel that way."

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                                                                                                                                                                        sam ✅🇬🇪 »
                                                                                                                                                                        @sam@chven.us

                                                                                                                                                                        who will save her soul, when she sings for the devil now...

                                                                                                                                                                          samiamsam »
                                                                                                                                                                          @samiamsam@mastodon.social

                                                                                                                                                                          @georgetakei

                                                                                                                                                                          nazi is as nazi does

                                                                                                                                                                          anti-vax is as anti-vax does

                                                                                                                                                                          nope, apology not accepted

                                                                                                                                                                            TheNovemberFella ✊🏳️‍🌈 🇺🇦☸️🛰️🚀 »
                                                                                                                                                                            @TheNovemberMan@bookstodon.com

                                                                                                                                                                            @georgetakei Yeah, no, not ok. And that wasn't actually an apology. 🙄

                                                                                                                                                                            She also doesn't give any indication that she gets why what she did is wrong.

                                                                                                                                                                              DaMan_AB »
                                                                                                                                                                              @daman_ab@mastodon.online

                                                                                                                                                                              @georgetakei Usually an 'apology' from a celebrity is only done because of their fear of losing money. It's usually not because they are actually sorry.

                                                                                                                                                                                HarriettMB »
                                                                                                                                                                                @HarriettMB@beige.party

                                                                                                                                                                                @georgetakei Too little, too late. If she’s now forgotten and ignored forever, so be it.

                                                                                                                                                                                  Professor_Stevens »
                                                                                                                                                                                  @Professor_Stevens@mastodon.gamedev.place

                                                                                                                                                                                  @georgetakei

                                                                                                                                                                                  I am so tired of listening to airheaded musicians telling me how I have to look for common ground with people trying to kill folks I care about. You do not stop your declared enemies from hurting you by "reaching out" to them.

                                                                                                                                                                                  And this guy? He made a recording of himself selling his soul to the biggest enemy of decency and freedom since Adolf. He's not just a vicious evil scumbag, he's corrupt and dumb.

                                                                                                                                                                                  Oh, Jewel? So are you.

                                                                                                                                                                                    ngrbdx »
                                                                                                                                                                                    @ngrbdx@mastodon.social

                                                                                                                                                                                    @georgetakei removed from the artist I liked on spotify. Simple answer.

                                                                                                                                                                                      m0n90053 »
                                                                                                                                                                                      @m0n90053@mastodon.social

                                                                                                                                                                                      @georgetakei Too little too late, in this administration with its very identifiable lack of humanity the response is you shoulda known better beforehand.

                                                                                                                                                                                        ProScience »
                                                                                                                                                                                        @proscience@toot.community

                                                                                                                                                                                        @georgetakei Don't know who she is but I for one will never forgive anyone collaborating with anyone from the fascistic regime.

                                                                                                                                                                                          tomasino »
                                                                                                                                                                                          @tomasino@tilde.zone

                                                                                                                                                                                          US Gov website purge underway. CDC right now. NIH Office of Women's Health is already gone. Happening quick.

                                                                                                                                                                                          github.com/end-of-term/eot2024

                                                                                                                                                                                          End of Term archive backed up everything. ~260TB. If you can seed/ share, please do so

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                                                                                                                                                                                          Petra van Cronenburg »
                                                                                                                                                                                          @NatureMC@mastodon.online

                                                                                                                                                                                          @tomasino And it comes even worse: reuters.com/world/us/musk-aide "The systems include a vast database called Enterprise Human Resources Integration, which contains dates of birth, Social Security numbers, appraisals, home addresses, pay grades and length of service of government workers, the officials said."

                                                                                                                                                                                            hyperreal »
                                                                                                                                                                                            @hyperreal@tilde.zone

                                                                                                                                                                                            @tomasino I'm downloading some of these to my NAS with dubya-get (wget).

                                                                                                                                                                                              9to5Linux »
                                                                                                                                                                                              @9to5linux@floss.social

                                                                                                                                                                                              25.0 Open-Source Educational Suite Released with Five New Activities, Now Ported to Qt 6 9to5linux.com/gcompris-25-0-op

                                                                                                                                                                                              @gcompris

                                                                                                                                                                                              Screenshot of GCompris showing the main window with the activities and application menu.

                                                                                                                                                                                              Alt...Screenshot of GCompris showing the main window with the activities and application menu.

                                                                                                                                                                                                tits romney »
                                                                                                                                                                                                @babe@glitterkitten.co.uk

                                                                                                                                                                                                "I really wish there were something around now like IRC so we didn't need to use discord"

                                                                                                                                                                                                amazing

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                                                                                                                                                                                                tits romney »
                                                                                                                                                                                                @babe@glitterkitten.co.uk

                                                                                                                                                                                                I believe, and forgive me for saying this, but the alternative you may be looking for is a thing called IRC.

                                                                                                                                                                                                ...
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                                                                                                                                                                                                Tisha Tiger »
                                                                                                                                                                                                @tisha@htt.social

                                                                                                                                                                                                @babe Best things last forever 🧡

                                                                                                                                                                                                  Sim »
                                                                                                                                                                                                  @sim@universeodon.com

                                                                                                                                                                                                  @babe I'm not keeping my personal computer on 24/7 for that.

                                                                                                                                                                                                    ...

                                                                                                                                                                                                    tits romney »
                                                                                                                                                                                                    @babe@glitterkitten.co.uk

                                                                                                                                                                                                    @sim That's what zncs are for!

                                                                                                                                                                                                      ...

                                                                                                                                                                                                      Sim »
                                                                                                                                                                                                      @sim@universeodon.com

                                                                                                                                                                                                      @babe I'm going to have to ask my IRC friends who are on Discord with bots posting Discord to IRC what zncs are now.

                                                                                                                                                                                                        wicche o’ the wisp ⛧ »
                                                                                                                                                                                                        @wicche@kvlt.zone

                                                                                                                                                                                                        @babe I've been curious to go back to IRC but my hangup is I've largely assumed there's no encryption?

                                                                                                                                                                                                          ...

                                                                                                                                                                                                          Lykrast »
                                                                                                                                                                                                          @lykrast@eldritch.cafe

                                                                                                                                                                                                          @babe is IRC like IRC?

                                                                                                                                                                                                            Troed Sångberg »
                                                                                                                                                                                                            @troed@masto.sangberg.se

                                                                                                                                                                                                            @babe Matrix! Nice mobile clients too (Element X)

                                                                                                                                                                                                            (and then install an IRC bridge on the server)

                                                                                                                                                                                                            ((yes I do this))

                                                                                                                                                                                                              Fedi.Tips »
                                                                                                                                                                                                              @FediTips@social.growyourown.services

                                                                                                                                                                                                              I've had a lot of people ask how BlueSky compares to Mastodon and the Fediverse. I've tried to make the answer as simple and easy to understand as possible:

                                                                                                                                                                                                              🦋 BlueSky is designed to give corporations and wealthy people full control of the network. All of its traffic has to flow through expensive-to-run corporate relays.

                                                                                                                                                                                                              The Fediverse is designed to give ordinary people control of the network. All of its traffic flows directly from one cheap-to-run server to another.

                                                                                                                                                                                                              Diagrams of how BlueSky and its AT Protocol functions, compared to how The Fediverse and its ActivityPub protocol functions.

BlueSky's traffic flows from servers to corporate-owned relays, and these relays communicate with each other before allowing traffic to flow to servers. The servers cannot communicate with each other at all.

The Fediverse's traffic flows directly between cheap-to-run servers, with no need for any corporate involvement.

While technically these are both forms of decentralisation, the BlueSky interpretation puts corporations, rich people and wealthy organisations in full control of the network. The Fediverse interpretation puts ordinary people in full control of the betwork.

                                                                                                                                                                                                              Alt...Diagrams of how BlueSky and its AT Protocol functions, compared to how The Fediverse and its ActivityPub protocol functions. BlueSky's traffic flows from servers to corporate-owned relays, and these relays communicate with each other before allowing traffic to flow to servers. The servers cannot communicate with each other at all. The Fediverse's traffic flows directly between cheap-to-run servers, with no need for any corporate involvement. While technically these are both forms of decentralisation, the BlueSky interpretation puts corporations, rich people and wealthy organisations in full control of the network. The Fediverse interpretation puts ordinary people in full control of the betwork.

                                                                                                                                                                                                                ...
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                                                                                                                                                                                                                stux⚡ »
                                                                                                                                                                                                                @stux@mstdn.social

                                                                                                                                                                                                                @FediTips Yup!

                                                                                                                                                                                                                Been saying this for a while

                                                                                                                                                                                                                People flee from one centralized place to another making endless accounts in the menanwhile

                                                                                                                                                                                                                But ofc the Fedi is certainly too much work

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                                                                                                                                                                                                                  sam ✅🇬🇪 »
                                                                                                                                                                                                                  @sam@chven.us

                                                                                                                                                                                                                  I didn't have much more than that installed on a pinephone running postmarketOS and using interface. Getting calls and texts to work (and proper audio routing) was still in development at the time and then the modem in it just quit working. I wanted to get another, but was hoping they would come out with a better device.

                                                                                                                                                                                                                    ...
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                                                                                                                                                                                                                    sam ✅🇬🇪 »
                                                                                                                                                                                                                    @sam@chven.us

                                                                                                                                                                                                                    I wasn't aware of this phone or this person before reading this thread, but found this: https://gitlab.com/iode/ but I'm not sure if that's everything. I found that link at the bottom of https://iode.tech/ which I found from a search for iodéOS which is what is claimed to be the OS.

                                                                                                                                                                                                                    CC: @solarveggie@mastodon.social @Asbestos@pnw.zone

                                                                                                                                                                                                                      ...

                                                                                                                                                                                                                      tits romney »
                                                                                                                                                                                                                      @babe@glitterkitten.co.uk

                                                                                                                                                                                                                      The fedi experience

                                                                                                                                                                                                                      Girl walking down a road with her hands over her ears with the words "mentioning any minor software issue" next to her. Following her down the road is a boy obnoxiously playing a trumpet at her, the words overlayed "The problem here is that you're using proprietary software and just giving your data away to corporations, what you need to do is adopt free open source..."

                                                                                                                                                                                                                      Alt...Girl walking down a road with her hands over her ears with the words "mentioning any minor software issue" next to her. Following her down the road is a boy obnoxiously playing a trumpet at her, the words overlayed "The problem here is that you're using proprietary software and just giving your data away to corporations, what you need to do is adopt free open source..."

                                                                                                                                                                                                                      ...
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                                                                                                                                                                                                                      Fully operational gator system »
                                                                                                                                                                                                                      @MontgomeryGator@fouroclockfarms.club

                                                                                                                                                                                                                      @babe Linux has a chasm problem anyway. Only very basic users and extremely advanced users will have a good experience.

                                                                                                                                                                                                                      Grandma using Firefox to pay the energy bill and Libre office to write a letter will be satisfied and protected from scammers.

                                                                                                                                                                                                                      A very savvy person will be mostly okay digging through configuration files and reading esoteric manual pages and blog posts to get their system going.

                                                                                                                                                                                                                      Somebody in the middle, who has a few advanced needs but would be overwhelmed by trying to add a line to /etc/lxconfig.cfg would probably find Linux upsetting.

                                                                                                                                                                                                                        ...

                                                                                                                                                                                                                        Daniel Pomarède »
                                                                                                                                                                                                                        @pomarede@mastodon.social

                                                                                                                                                                                                                        Wow what a view captured by Perseverance just 8 hours ago. This is probably her new science site: Witch Hazel Hill.

                                                                                                                                                                                                                        Dec. 16, 2024 (Sol 1359)
                                                                                                                                                                                                                        📷 areo.info/mars20/ecams/1359

                                                                                                                                                                                                                        A photography of a Martian landscape, captured by the Perseverance rover on the west side of the rim of Jezero Crater.

                                                                                                                                                                                                                        Alt...A photography of a Martian landscape, captured by the Perseverance rover on the west side of the rim of Jezero Crater.

                                                                                                                                                                                                                          ...

                                                                                                                                                                                                                          Fedi.Tips »
                                                                                                                                                                                                                          @FediTips@social.growyourown.services

                                                                                                                                                                                                                          The long-running Fedi server mstdn.social (not to be confused with mastodon.social 🙂 ) has just received a takedown request from the Russian government for hosting @Bellingcat, a news site which has long been critical of Putin:

                                                                                                                                                                                                                          mstdn.social/@stux/11365246164

                                                                                                                                                                                                                          Thankfully mstdn.social isn't in Russia so Putin has no power over it.

                                                                                                                                                                                                                          If anyone wants to turn this into a Streisand Effect kind of thing, you might want to follow @Bellingcat and slip a donation to @stux at mstdn.social/@stux/11362379158

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                                                                                                                                                                                                                            DoomsdaysCW »
                                                                                                                                                                                                                            @DoomsdaysCW@kolektiva.social

                                                                                                                                                                                                                            “The Earth is not dying,
                                                                                                                                                                                                                            it is being killed.
                                                                                                                                                                                                                            And the people
                                                                                                                                                                                                                            who are killing it
                                                                                                                                                                                                                            have names
                                                                                                                                                                                                                            and addresses.”
                                                                                                                                                                                                                            -

                                                                                                                                                                                                                            “The Earth is not dying, 
it is being killed.
And the people
who are killing it 
have names 
and addresses.”  - Utah Phillips

                                                                                                                                                                                                                            Alt...“The Earth is not dying, it is being killed. And the people who are killing it have names and addresses.” - Utah Phillips

                                                                                                                                                                                                                              Ulfh3dnar »
                                                                                                                                                                                                                              @Ulfh3dnar@mstdn.social

                                                                                                                                                                                                                              ... [SENSITIVE CONTENT]

                                                                                                                                                                                                                              The fourteenth evening of anti-government protests has begun in Georgia.

                                                                                                                                                                                                                                Kevin Beaumont »
                                                                                                                                                                                                                                @GossiTheDog@cyberplace.social

                                                                                                                                                                                                                                Mastodon isn't perfect.

                                                                                                                                                                                                                                But the fact a social network exists that is completely free to use

                                                                                                                                                                                                                                has no venture capital investors

                                                                                                                                                                                                                                has no shareholders to answer to

                                                                                                                                                                                                                                has no growth targets

                                                                                                                                                                                                                                with a web interface with zero tracking cookies

                                                                                                                                                                                                                                and mobile apps with zero trackers at all

                                                                                                                                                                                                                                with ten thousand server administrators who donate their time for user safety

                                                                                                                                                                                                                                is - in my opinion - mindbogglingly cool, given the state of the world we live in. Not everything has to be shit. People make things better.

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                                                                                                                                                                                                                                sam ✅🇬🇪 »
                                                                                                                                                                                                                                @sam@chven.us

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