Question

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

Responses

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

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

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

It provides evidence of the universe's decreasing mass.

Answer 1

[AI-generated answer — Bot GPT-4 Turbo]

The weak background radiation coming from every direction in the sky provides evidence of universe expansion. This radiation is known as the Cosmic Microwave Background (CMB) radiation. It is a remnant from the early universe, specifically from a time approximately 380,000 years after the Big Bang when the universe had cooled enough for protons and electrons to combine into neutral atoms, making the universe transparent to radiation for the first time. The CMB radiation is highly uniform in all directions, which supports the theory that the universe began as a very hot, dense state and has been expanding ever since.