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The Doppler effect indicates that the universe is expanding because _____.

A. Light from other galaxies is the same color.
B. Light from other galaxies is different colors.
C. Light from other galaxies is blue shifted
D. Light from other galaxies is red shifted.

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User Blgt
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2 Answers

3 votes

Answer:

D

Step-by-step explanation:

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User Kumar V
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7 votes

D. Light from other galaxies is red shifted.

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User DFTR
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