Question

how does spectroscopy provide evidence for the big bang theory? (1 point)
the intensities of peaks show that galaxies are moving toward each other.
the red shift shows that galaxies are moving toward each other.
the intensities of peaks show that galaxies are moving away from each other.
the red shift shows that galaxies are moving away from each other.
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Explanation:

Spectroscopy reveals the redshift of light from distant galaxies. Redshift occurs when an object is moving away from the observer, and this supports the idea that galaxies are moving away from each other, which is consistent with the Big - Bang theory's prediction of an expanding universe. The intensity of peaks is not related to the motion of galaxies in the context of evidence for the Big - Bang theory.

Answer:

The red shift shows that galaxies are moving away from each other.