Project Gutenberg on Nostr: American astronomer Henrietta Hill Swope was born #OTD in 1902. Working with H. ...
American astronomer Henrietta Hill Swope was born #OTD in 1902.
Working with H. Shapley, she helped establish
the famous period-luminosity relation for Cepheid variable stars, thereby permitting determination of the Sun's position in our galaxy and of distances
to other galaxies. In 1962, using plates taken with the 200" Hale reflector by W. Baade, she determined the distance to the Andromeda galaxy to be 2.2 million light years.
https://en.wikipedia.org/wiki/Henrietta_Hill_Swope
#astronomy
Working with H. Shapley, she helped establish
the famous period-luminosity relation for Cepheid variable stars, thereby permitting determination of the Sun's position in our galaxy and of distances
to other galaxies. In 1962, using plates taken with the 200" Hale reflector by W. Baade, she determined the distance to the Andromeda galaxy to be 2.2 million light years.
https://en.wikipedia.org/wiki/Henrietta_Hill_Swope
#astronomy