Name This Astronomer
Historical astronomy quiz about the astronomer who located the Milky Way's center using globular clusters.
He worked at Mt. Wilson in the 1920s and determined the center of the Milky Way galaxy by the distribution of globular star clusters. He later moved on to Harvard Observatory.
Archived source: https://web.archive.org/web/20100314185038/http://www.spacetimeandtheuniverse.com:80/5019-post1.html