According to big bang theory, the Universe started out with a very hot beginning, and has been cooling and expanding ever since.

Question

Which ,begin emphasis,two,end emphasis, observations of cosmic microwave background radiation support big bang theory?

Answer options with 5 options
A.
Cosmic microwave background radiation redshifted and increased in mass over time.

B.
Cosmic microwave background radiation exists in all areas of the observable universe.

C.
Cosmic microwave background radiation contains all of the dark matter necessary to start the Big Bang.

D.
Cosmic microwave background radiation stores the same amount of energy the Big Bang likely released.

E.
Cosmic microwave background radiation has a relatively consistent temperature throughout the observable universe.

Answer 1

The two observations of cosmic microwave background radiation that support the Big Bang theory are:

B. Cosmic microwave background radiation exists in all areas of the observable universe.

E. Cosmic microwave background radiation has a relatively consistent temperature throughout the observable universe.

These observations are significant because they indicate the uniformity and pervasiveness of the radiation, which is a remnant from the hot, dense state of the early universe, consistent with the predictions of the Big Bang theory.