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gol4 OP t1_ixxey2f wrote

Reply to comment by Ape_Togetha_Strong in light from galaxies by gol4

I don't know..supposedly when I look in the sky I'm seeing the light from 2.5mil years ago.

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Independent-Cod3150 t1_ixy9560 wrote

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.

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