Hubble, Edwin
Published: September 8, 2006, 2:18 am
Updated: September 8, 2006, 2:18 am
This article has been reviewed by the following Topic Editor:
Peter Saundry
Edwin Hubble (1889-1953), an American astronomer widely regarded as the most influential astronomer since the times of Galileo, Kepler, and Newton. He is also regarded as the founder of the field of cosmology. He made four seminal contributions: (1) he proposed a new classification system for nebulae (1922-1926); (2) he determined that the distribution of galaxies, averaged over many solid angles, was homogeneous in distance (1922-1936); (3) he settled decisively the question of the nature of the galaxies (1924); and (4) he developed the notion of the expanding universe (1929) that is the core of cosmological science today. His discovery of the expanding universe was based on the observation that light emitted by distant galaxies is shifted to longer wavelengths when compared to the spectrum of closer galaxies. This phenomenon became known as the red shift and is due to the Doppler effect.
Further Reading
Hubble Biography (University of St. Andrews, Scotland, School of Mathematics and Statistics)
NASA's Hubble Space Telescope (National Aeronautics and Space Administration)
People and Discoveries: Edwin Hubble (PBS Online)
Time 100: Edwin Hubble (TIME Magazine Online)
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Citation
Cutler J. Cleveland (Lead Author);Peter Saundry (Topic Editor) "Hubble, Edwin". In: Encyclopedia of Earth. Eds. Cutler J. Cleveland (Washington, D.C.: Environmental Information Coalition, National Council for Science and the Environment). [First published in the Encyclopedia of Earth September 8, 2006; Last revised Date September 8, 2006; Retrieved June 19, 2013 <http://www.eoearth.org/article/Hubble,_Edwin>
The Author
Cutler J. Cleveland is Professor of Earth and Environment at Boston University, where he also is on the faculty of the Center for Energy and Environmental Studies. Professor Cleveland is Editor-in-Chief of the Encyclopedia of Energy (Elsevier, 2004), winner of an American Library Association award, the Dictionary of Energy (Elsevier, 2005), Handbook of Energy (Elsevier, forthcoming), and is the Founding Editor-in-Chief of the Encyclopedia of Earth. He is the recipient of the Adelma ... (Full Bio)
Edwin Hubble (1889-1953), an American astronomer widely regarded as the most influential astronomer since the times of Galileo, Kepler, and Newton. He is also regarded as the founder of the field of cosmology. He made four seminal contributions: (1) he proposed a new classification system for nebulae (1922-1926); (2) he determined that the distribution of galaxies, averaged over many solid angles, was homogeneous in distance (1922-1936); (3) he settled decisively the question of the nature of the galaxies (1924); and (4) he developed the notion of the expanding universe (1929) that is the core of cosmological science today. His discovery of the expanding universe was based on the observation that light emitted by distant galaxies is shifted to longer wavelengths when compared to the spectrum of closer galaxies. This phenomenon became known as the red shift and is due to the Doppler effect.
Further Reading
Hubble Biography (University of St. Andrews, Scotland, School of Mathematics and Statistics)
NASA's Hubble Space Telescope (National Aeronautics and Space Administration)
People and Discoveries: Edwin Hubble (PBS Online)
Time 100: Edwin Hubble (TIME Magazine Online)
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