The expansion of the universe means that select one:
a. as time goes by, galaxies move away f...
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The expansion of the universe means that select one:
a. as time goes by, galaxies move away from each other through empty space.
b. as time goes by, space itself expands, carrying the galaxies along with it.
c. each object in the universe expands its size.
d. the light from distant galaxies is doppler shifted as the galaxies move away from us.
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Answers: 3
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