Question

Which statement accurately describes the origin and expansion of the universe?

Answer 1

ANSWER:

Cosmic background radiation is leftover thermal energy from the Big Bang best describes the origin and expansion of the universe.

EXPLANATION:

• The "Big Bang Theory" is used to describe how the universe has begun.

• The theory basically states that the "universe" began as a "single point" and then "expanded and stretched" and is expanding even today.

• When the universe began, it was "hot tiny particles" mixed with heat and light and as it "expanded" and took up "more space", it cooled down and formed atoms.

• The "best evidence of the big bang" is the radiation of cosmic background that was leftover when the first big bang explosion took place and began the universe.