Light from stars provides evidence that the universe is expanding. Which two statements explain how light from the stars indicates the universe is expanding?
A. The light waves are closer together than predicted.
B. The light waves get "stretched out" as they travel.
C. The light waves appear redder than expected.
D. The light waves look bluer than they should.
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Light from stars provides evidence that the universe is expanding. Which two statements explain how...
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