Full Name: Edwin Powell Hubble

Lived Between: 1889-1953

Nationality: American

Primary Occupation: Astronomer

Claim to Fame: Edwin Hubble devised a classification system for the various galaxies he observed, sorting them by content, distance, shape, and brightness; during the course of his research, he noticed red shifts in the emission of light from the galaxies, seeing saw that they were moving away from each other at a rate constant to the distance between them. From these observation, he was able to formulate Hubble's Law, helping astronomers determine the age of the universe, and proving that the universe was expanding.

Recommended Book: Edwin Hubble: American Astronomer (Book Report Biographies) -- Mary Virginia Fox; School & Library Binding

Recommended Link: www.edwinhubble.com