Word: petschek
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Dates: during 1980-1989
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Other scientists, drawn into the fray by the Alvarez conjecture, have since suggested that a large comet might have similar consequences. Los Alamos Weapons Experts Stirling Colgate and Albert Petschek computed that a comet six miles in diameter hitting the earth would have an effect 100,000 to 1 million times as great as a large nuclear explosion, and would blow a 100-sq.-mi. hole in the atmosphere...