Fritz Zwicky, Date of Birth, Place of Birth, Date of Death

Fritz Zwicky

Swiss astronomer (1898-1974)

Date of Birth: 14-Feb-1898

Place of Birth: Varna, Varna Province, Bulgaria

Date of Death: 08-Feb-1974

Profession: astronomer, physicist, astrophysicist, university teacher

Nationality: United States, Switzerland

Zodiac Sign: Aquarius

Fritz Zwicky (; German: ['tsv?ki]; February 14, 1898 – February 8, 1974) 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 Materie".