As evidence supporting the Big Bang theory, what does the redshift of light from galaxies indicate?(1 point)

Responses

The universe is expanding.
The universe is expanding.

The universe is mainly hydrogen.
The universe is mainly hydrogen.

The universe is cooling off.
The universe is cooling off.

The universe is 13.8 billion years old.

1 answer

The correct response is:

The universe is expanding.

The redshift of light from distant galaxies indicates that they are moving away from us, which supports the idea that the universe is expanding.