The Big Bang theory predicts a certain composition of the matter in the Universe. How do current observations of the Universe support these predictions?

A. The volume of every atom in the Universe is less than 1% matter and more than 99% empty space because electrons expanded from the nuclei of atoms during the Big Bang.

B. The volume of the Universe is 4% matter and 96% empty space because chunks of matter first moved away from each other during the Big Bang but then stopped moving.

C. The mass of ordinary matter in the Universe is 75% hydrogen and 25% helium because individual protons formed in the earliest stages of the Universe and then some of them combined.

D. The mass of ordinary matter in the Universe is 99% heavy elements and 1% light elements because the Universe began as a dense, heavy point.

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GinnyAnswer GinnyAnswer · Answer 1 · 2024-07-12T10:48:33-04:00

The Big Bang theory's predictions are supported by evidence like Hubble expansion, Cosmic Microwave Background radiation, and element abundances.

The current observations of the Universe support the predictions of the Big Bang theory in several ways:

Hubble Expansion: The galaxies moving away from each other, indicating the previous denser state of the Universe.
Cosmic Microwave Background (CMB): The CMB radiation acts as evidence of the hot, early Universe state.
Element Abundances: The observed relative abundances of hydrogen, helium, and deuterium not matching the density of normal matter, leading to the conclusion of dark matter's existence.

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