Ejnar Hertzsprung
Danish chemist and astronomer
Ejnar Hertzsprung was a Danish chemist and astronomer. Wikipedia
Born: October 8, 1873, Copenhagen, Denmark
Died: October 21, 1967 (age 94 years), Roskilde, Denmark
Known for: Hertzsprung gap; Hertzsprung–Russell diagram
Discovered: 1627 Ivar and 1702 Kalahari
Nationality: Danish
Awards: Bruce Medal (1937) and Gold Medal of the Royal Astronomical Society (1929)