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Ralph Asher Alpher

American cosmologist (1921-2007) · United States · On the map · Scientists · Died at 86

Ralph Asher Alpher 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.

Ralph Asher Alpher is read about 30 times a day, in 31 languages.

A typical day, 30 days to 19 June 2026

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A life in dates

2007Died12 August 20072005National Medal of ScienceAward1993Henry Draper MedalAward1980John Price Wetherill MedalAward1975Magellanic PremiumAward1921Born3 February 1921

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Awards

National Medal of Science2005
Henry Draper Medal1993
John Price Wetherill Medal1980
Magellanic Premium1975
Fellow of the American Academy of Arts and Sciences

About this person

Country
United States
Category
Scientists
Type
Scientist
Status
Deceased
Dates
Lived 1921 to 2007 · aged 86