Edwin Hubble

Edwin Powell Hubble (November 20, 1889 – September 28, 1953) was an American astronomer, noted for his discovery of galaxies beyond the Milky Way and the cosmic red shift. Edwin Hubble was one of the first to argue that the red shift of distant galaxies is due to the Doppler effect induced by the expansion of the universe. He was one of the leading astronomers of modern times and laid down the foundation upon which physical cosmology now rests.

Bibliography

• Hubble E.P., The Observational Approach to Cosmology (Oxford, 1937).
• Hubble E.P., The Realm of the Nebulae (New Haven, 1936).