The red shift in the spectral lines of light reaching us from other galaxies implies that these

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The red shift in the spectral lines of light reaching us from other galaxies implies that these galaxies
a. Are moving closer to one another
b. Are moving farther apart from one another
c. Are in rapid rotation
d. Consist predominantly of giant stars

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The Physical Universe

ISBN: 978-0077862619

16th edition

Authors: Konrad B Krauskopf, Arthur Beiser

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