Independent-Cod3150 t1_ixy9560 wrote
Reply to comment by gol4 in light from galaxies by gol4
It's more complicated than that. It isn't just that it takes light 2.5m years to span the distance from our perspective. Light also travels at the speed of causality, and nothing that occurred in Andromeda can reach Earth before the light.
Viewing a single comment thread. View all comments