Even Einstein was reluctant to endorse this extension of his theory of general relativity. In 1929 at the Mt. Wilson Observatory in California, Edwin Hubble discovered that galaxies were moving ...

Hubble revealed a universe of galaxies that existed beyond ours — but he couldn't have done it without a little help.

It wasn't until 1949 that the term "big bang" came into fashion. This was a relief to Edwin Hubble's contemporary ... He was partly right in that Einstein's theory of special relativity explained ...

Belgian cosmologist and Catholic priest Georges Lemaitre made that connection by realizing that the theory ... the big bang, when the universe was 20 times smaller than it is now. Edwin Hubble ...

The Big Bang Theory explains how the universe began. The Big Bang Theory stands as the most widely accepted explanation for the origin of the universe. According to this theory, the universe began ...

The Andromeda galaxy helped Edwin Hubble settle a great debate in astronomy. Stocktrek Images via Getty Images ...

Circa 1945: Astronomer Dr. Edwin Powell Hubble sitting in a ... to offer observational evidence supporting the theory, now known as Hubble's Law, of the expansion of the universe. . | Credit ...