6 ms·

A single photon can't be seen multiple times, right? So, if photon A goes into Alica's retina, then Bob can't see photon A. If a big, opaque object passes throu

A single photon can't be seen multiple times, right? So, if photon A goes into Alica's retina, then Bob can't see photon A. If a big, opaque object passes through the event horizon right in front of you, it would absorb or scatter the photons in its path, and you would not see them.

cyberax 2y ago
Yep, I explained it a bit more here: https://news.ycombinator.com/item?id=42299891 https://news.ycombinator.com/item?id=42299891
- mtdewcmu 2y ago
  So you don't see _everything_ that went in before you, mostly just the _last_ thing.
  - cyberax 2y ago
    You'll see kind of a "cone" where the light emitted from all the objects just ahead of you can be seen, but as you look further away, you can see only more and more recent objects.