How does weak background radiation coming from every direction in the sky support the Big Bang Theory?(1 point)

Question

Responses

It provides evidence of the universe's decreasing mass.
It provides evidence of the universe's decreasing mass.

It provides evidence of universe contraction.
It provides evidence of universe contraction.

It provides evidence of universe expansion.
It provides evidence of universe expansion.

It provides evidence of the universe's increasing mass.

Answer 1

It provides evidence of universe expansion.

The weak background radiation, known as the Cosmic Microwave Background (CMB) radiation, is a remnant from the early stages of the universe, specifically from the time when the universe was hot and dense, and it has since cooled and stretched as the universe expanded. This supports the Big Bang Theory by providing evidence that the universe has been expanding since its inception.