4 ms·

Really? Do you have a proof for this? The maths doesn't make sense to me, you're inside the boundary where gravity causes light to fall back towards the singula

• jvanderbot 2y ago
  Yes light falls towards the singularity, as opposed to, say, falling into your eyes, right? So look back and I suppose you'd see a massively phase shifted pinpoint of the universe in the line going from singularity through your eye and out of the event horizon? It wouldn't be straight out, but more like the "deorbit"
  • davedx 2y ago
    No I mean... light is emitted from the singularity (because it's an incredibly super dense piece of something star-like). It shines outwards, losing momentum, and at the event horizon it bends back around and falls back down into the singularity. So if I'm inside the event horizon, the light that's emitted from the singularity should hit my retina, right? What am I missing?
    • sigmoid10 2y ago
      No. The event horizon is just an imaginary point where the escape velocity equals the speed of light. As you get closer to the singularity, the escape velocity increases further. So you could imagine every shell of a sphere inside the horizon as another horizon. If you sit somewhere between the event horizon and the singularity (technically impossible since not even going at the speed of light could prevent you from falling down further), only lightrays that were emitted outside of your "horizon" can reach you.