In the 1920s, astronomers thought that the Milky Way was the entire universe. Hubble's discovery revealed a much bigger ...

The theory is correct." ♪♪ ♪♪ -This is Edwin Hubble, one of the foremost astronomers of the 20th century. He's preparing himself for yet another cold night's work up in the mountains over ...

In 1920, astronomers Harlow Shapley and Heber Curtis held a Great Debate. Shapley argued that the spiral nebulae were small and in the Milky Way, while Curtis took a more radical position that they ...

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 ...

Edwin Hubble's observations of V1 became the critical ... He was partly right in that Einstein's theory of special relativity explained redshift as an effect of time-dilation that is proportional ...

Hubble makes his mark Edwin Hubble was young and ambitious ... Georges Lemaitre made that connection by realizing that the theory of general relativity described an expanding universe.

Edwin Hubble was the first astronomer to take the ... He was partly right in that Einstein's theory of special relativity explained redshift as an effect of time-dilation that is proportional ...