Multiple Choice
Based on the observed red shifts in the spectral lines of distant galaxies,astronomers conclude that ________.
A) Earth is in the center of the universe
B) the universe is contracting
C) the universe is expanding
D) the universe is in a steady state
Correct Answer:
Verified
Correct Answer:
Verified
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Q30: The greatest number of galaxies belong to
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Q32: What is the main factor that determines
Q33: The measure of a star's brightness is
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