Viewing a single comment thread. View all comments

Blueskys643 t1_j6v8ahr wrote

Astronomy question, I think. If we found a perfectly positioned mirror in space 100 light years away, would we see 200 years into the past? Or maybe if a black hole was bending light at the perfect angle?

2

mfb- t1_j6vpcu7 wrote

In principle, yes. In practice that mirror would need absurd dimensions, and a black hole doesn't get sufficient light back to even see the Sun.

1