Fritz Zwicky
Fritz Zwicky was a Swiss astronomer. He worked most of his life at the California Institute of Technology in the United States of America, where he made many important contributions in theoretical and observational astronomy. In 1933, Zwicky was the first to use the virial theorem to infer the existence of unseen dark matter, describing it as "dunkle (kalt) Materie".
From *.wikipedia.org,
General Info
.
Male
Date of Birth
February 14th, 1898
Age
127
Birth Place
Bulgaria, Varna Province
Date of Death
February 8th, 1974
Died Aged
75
Star Sign
Aquarius
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