They say that when we look up to see stars, we’re actually seeing the light from dead stars. So technically, we can’t see what’s out there in the present? What do you think is out there now? is it just new, modern stars or we don’t get to see anything at all? (since by now, everything has expanded billions of miles apart from each other that light is far from anything to reach)
In: Planetary Science
An alien living 1 billion light years away would see our galaxy as it was 1 billion years ago. Our galaxy still has plenty of stars, sure some the aliens see will have died but new stars were born and replaced them.
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