Question

Expanding Universe Quick Check
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Question
Which sentence about galaxies provides evidence of universe expansion that supports the Big Bang Theory?(1 point)
Responses

Galaxies are moving away from each other.
Galaxies are moving away from each other.

Galaxies are moving at different speeds and in different directions.
Galaxies are moving at different speeds and in different directions.

Galaxies are moving more slowly than they have in the past.
Galaxies are moving more slowly than they have in the past.

Galaxies are in constant motion.

Answer 1

The sentence that provides evidence of universe expansion that supports the Big Bang Theory is:

**Galaxies are moving away from each other.**

This observation, known as the redshift of galaxies, indicates that the universe is expanding, which aligns with predictions made by the Big Bang Theory.