Ralph Alpher

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Ralph Alpher
Alpher in 1950
Born	Ralph Asher Alpher (1921-02-03)February 3, 1921 Washington, D.C., U.S.
Died	August 12, 2007(2007-08-12) (aged 86) Austin, Texas, U.S.
Nationality	American
Alma mater	George Washington University
Known for	First modern physical theory of nucleosynthesis and prediction of the Cosmic Microwave Background Radiation in 1948.
Awards	Magellanic Premium (1975) Henry Draper Medal (1993) National Medal of Science (2005)
Scientific career
Fields	Cosmology, Theoretical Physics and Astrophysics
Institutions	Johns Hopkins University Applied Physics Laboratory, General Electric Research and Development Center, Union College, Dudley Observatory
Doctoral advisor	Georg Antonovich Gamow

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Physical cosmology
Big Bang · Universe Age of the universe Chronology of the universe
Early universe Inflation · Nucleosynthesis Backgrounds Gravitational wave (GWB) Microwave (CMB) · Neutrino (CNB)
Expansion · Future Hubble's law · Redshift Expansion of the universe FLRW metric · Friedmann equations Inhomogeneous cosmology Future of an expanding universe Ultimate fate of the universe
Components · Structure Components Lambda-CDM model Dark energy · Dark matter Structure Shape of the universe Galaxy filament · Galaxy formation Large quasar group Large-scale structure Reionization · Structure formation
Experiments Black Hole Initiative (BHI) BOOMERanG Cosmic Background Explorer (COBE) Dark Energy Survey Planck space observatory Sloan Digital Sky Survey (SDSS) 2dF Galaxy Redshift Survey ("2dF") Wilkinson Microwave Anisotropy Probe (WMAP)
Scientists Aaronson Alfvén Alpher Copernicus de Sitter Dicke Ehlers Einstein Ellis Friedmann Galileo Gamow Guth Hawking Hubble Huygens Kepler Lemaître Mather Newton Penrose Penzias Rubin Schmidt Smoot Suntzeff Sunyaev Tolman Wilson Zeldovich List of cosmologists
Subject history Discovery of cosmic microwave background radiation History of the Big Bang theory Timeline of cosmological theories
Category Astronomy portal
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Ralph Asher Alpher (February 3, 1921 – August 12, 2007) was an American cosmologist, who carried out pioneering work in the early 1950s on the Big Bang model, including Big Bang nucleosynthesis and predictions of the cosmic microwave background radiation.