• krooklochurm@lemmy.ca
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      3 months ago

      De sitter space and anti de sitter space took me a while to grok as it relates to all this stuff

    • Canaconda@lemmy.ca
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      3 months ago

      Love PBS Space time!

      So like in your opinion, tldr, do you think it’s explicitly impossible for light to survive entering a black hole such that it could reproduce an image of whatever it reflected off?

      • FooBarrington@lemmy.world
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        3 months ago

        From which point of view?

        If the observer is inside the event horizon of the black hole, they’ll see the light as normal. There’s nothing special about the event horizon for the observer or the ray of light.

        If the observer is outside of the black hole, they won’t ever see the light.

        • Canaconda@lemmy.ca
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          3 months ago

          I’m talking as an inside observer. Like what if spaghettification = red shift and the “too large, too old, to developed” galaxies like MoM-z14 detected by JWST are actually from outside our universe’s event horizon.

          • FooBarrington@lemmy.world
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            3 months ago

            It’s definitely possible in the case of a real black hole. I think it’s unlikely to apply to the model we’re talking about - the spaghettification would have to happen outside the event horizon, and that only applies to very small black holes.

        • Canaconda@lemmy.ca
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          3 months ago

          Light that falls over the edge of the event horizon cannot get out again

          I’m talking as an inside observer. Like what if spaghettification = red shift and the “too large, too old, to developed” galaxies like MoM-z14 detected by JWST are actually from outside our universe’s event horizon.

    • captainlezbian@lemmy.world
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      3 months ago

      The hardest to understand thing about physics is that for those of us who got off on an earlier offramp it absolutely feels like this is an entirely different category of thing than a statics or dynamics class. Like, it feels like a lot when you go from “here’s how ballistics, tension, and springs work” to “this is how electricity flows through metal and what forces make it do so”. Then eventually, people who majored in that shit wind up doing this shit.