• self@awful.systems
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      1 day ago

      Kessler syndrome, and historically starlink’s satellites don’t always burn up in the atmosphere as they should

      • GreyEyedGhost@piefed.ca
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        1 day ago

        For the millionth time, if every satellite in the starlink constellation were to fail today, they would be gone in about five years at the high end. They are low enough in the atmosphere that they have to fire station-keeping rockets to maintain orbit. If they collide, the small pieces deorbit even faster due to drag.

        From this article:

        At around 400 kilometers and into the 500-km realm — home to ISS and the SpaceX Starlink satellites among others — atmospheric drag plays a major role. Dead satellites and debris usually slow and burn up in the atmosphere in just a few years. This natural cleansing process accelerates when the sun becomes more active and solar coronal mass ejections strike Earth and cause the atmosphere to swell.

        “In those altitudes, we can probably do a lot and we will be forgiven,” Linares says.

        • TranscendentalEmpire@lemmy.today
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          18 hours ago

          That was my understanding, most of the fear of Kessler syndrome starts when you’re talking about things higher up in orbit like at 600km or more.

        • burble@lemmy.dbzer0.com
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          1 day ago

          Agreed in general, but debris from collisions can head upwards as well.

          For example, Kosmos-1408 orbited at about 475km and left debris from 300-1100km. This is an older debris chart, but it shows that event in red.

          • self@awful.systems
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            1 day ago

            anyone else who wants to tell me “for the millionth time” about how it’s super safe to fill low-earth orbit with unprecedented amounts of literal garbage in pursuit of creating a shit-tier ISP that’s sucked hard every time I’ve used it is welcome to take it up with the professor of astronomy that wrote that last article

            “it’s not Kessler syndrome unless it’s from the Kessler region of space, otherwise it’s just sparkling Rods from God” fuck you

            • swlabr@awful.systems
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              19 hours ago

              these fucks: “Don’t make me tap the sign!!!”

              the sign: “My final braincell fell out of my open mouth while drooling”

            • V0ldek@awful.systems
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              21 hours ago

              Wait, does the Starlink internet suck as well? I mean, it has to have high latency, that much I’ve assumed, but other than that?

              • self@awful.systems
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                15 hours ago

                every time I’ve used it, it had massive issues with the connection hitching and with delivering anywhere near the promised amount of bandwidth

                my experience is my own, etc etc, but it reminded me a lot of how every time I’ve been in a self-driving tesla the only person impressed (and not terrified) of the thing was the owner

              • rook@awful.systems
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                15 hours ago

                We use starlink at work for communicating with some remote customer sites, and it’s been entirely adequate. As a super-subjective latency benchmark, i didn’t notice any particular difference in interactive ssh sessions to the starlink sites, and to the 4g lte sites in the same country. It’s been easier to set up and more reliable that some of the 4g links.

                I don’t like the fact that we’e paying elon money, but in the absence of a non-evil, non-ecologically disastrous, reasonably priced alternative, I don’t really have anything to offer management as a replacement. Everything else is either much worse, or more expensive and still worse, or vastly more expensive.

              • Amoeba_Girl@awful.systems
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                18 hours ago

                If I understand correctly, the only reason they’re in such low orbit, and thus why there needs to be so fucking many of them, is to have much lower latency compared to geostationary satellites. You know, in case you need to play Quake on your satellite connection.

              • Charlie Stross@wandering.shop
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                21 hours ago

                @V0ldek @techtakes If you want high latency, nothing beats telnet from the UK to a server in California via a comsat in GEO back in the early 90s when the trans-Atlantic cable circuit was down. A three-phase TCP exchange has to crawl up to GEO, 35,000km above the equator, and back down *three times*, never mind the surface level routing.

                Gave me a strong appreciation for Berkeley vi’s designed-in ability to cope with slow modems.

          • TranscendentalEmpire@lemmy.today
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            17 hours ago

            I hate Elon as much as anyone and think that SpaceX is bound for failure…but that article isn’t about a star link satellite. It was a cargo trunk from a SpaceX rocket which prob fell off much lower in orbit.

            • ebu@awful.systems
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              16 hours ago

              “ah, but you see, THIS piece of space garbage came from a totally unrelated space-garbage-launching mission”

              • TranscendentalEmpire@lemmy.today
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                16 hours ago

                No, SpaceX is still responsible for dropping trash that could harm people or property. There’s just a difference between dropping something from orbit and from lower in the atmosphere.

                The original argument was about worries over Kessler syndrome and then they moved the goal post to space junk not burning up completely, utilizing an article about space junk that wasn’t ever in orbit.

                I don’t give a shit about SpaceX, Elon and all his companies are complete trash. That doesn’t detract from the original argument that existing satalites in low earth orbit aren’t something to loose sleep about.

                You could make the argument that putting more junk into space has negative and unnecessary outcomes, but that’s a completely different argument that I would agree with.

                • self@awful.systems
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                  14 hours ago

                  The original argument was about worries over Kessler syndrome and then they moved the goal post to space junk not burning up completely, utilizing an article about space junk that wasn’t ever in orbit.

                  no, the “original argument” (jacking off motions) was prompted by this shitpost of yours:

                  I mean, what’s the worst that could happen?

                  nobody moved the fucking goal posts, normal people don’t go online to engage in a spot of spacex defense while pretending to hate first-name basis “Elon”. that you have a rehearsed set of fucking gotchas over the specific danger presented by spacex is fucking incredible.

                  You could make the argument that putting more junk into space has negative and unnecessary outcomes, but that’s a completely different argument that I would agree with.

                  but instead you decided to tediously split hairs over Kessler Syndrome as if anyone here other than the resident physicists give a shit. you don’t get it. nobody is here to win points. we’re not an IRB; nobody gives a shit what specific category of danger is represented by the space junk Musk’s generating. we give a shit that there’s danger at all.

                  fuck me there’s nothing more depressing than a spacex fan who swears they hate musk and goes to bat for the fucker’s worst, most damaging excesses