How does weak background radiation coming from every direction in the sky support the Big Bang Theory?(2 points)

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

The correct response is:

it provides evidence of universe expansion.

Weak background radiation, known as the cosmic microwave background radiation (CMB), is a remnant from the Big Bang. Its uniformity and characteristics support the idea that the universe has been expanding since its inception.