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Take a picture of a galaxy. What do you see?
If the light from a star at the edge of a galaxy takes, lets make it easy, 100,000 years to get to the other side of that galaxy and that star is traveling both with and within that galaxy, how is it possible for that light and the light of a star on the opposite side of that galaxy to reach a camera lens on earth at the same time? In other words, shouldn't we see star(a) in a different position relative to star(b), say about 100,000 years worth, then what we see when we look at a picture. For that matter, is any picture that's taken of any part of the universe really what's out there?...Z
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