What evidence supports the Big Bang theory?

Two major scientific discoveries provide strong support for the Big Bang theory: • Hubble’s discovery in the 1920s of a relationship between a galaxy’s distance from Earth and its speed; and • the discovery in the 1960s of cosmic microwave background radiation.

What are the 3 evidence of the big bang theory?

Three key pieces of observational evidence lend support to the Big Bang theory: the measured abundances of elements, the observed expansion of space, and the discovery of the cosmic microwave background (CMB).

What are the 4 evidences of the big bang theory?

Key observations supporting the big bang theory include: (1) expansion of the universe, (2) cosmic microwave background radiation, (3) abundances of the lightest chemical elements, and (4) age of the oldest-known stars.

What evidence supports the Big Bang quizlet?

Some pieces of evidence used to prove the big bang theory are moving galaxies, cosmic background, and the age of the universe.