Trivia: Who did Einstein collaborate with at Mount Wilson Observatory?
Carl Sagan
Neil deGrasse Tyson
Edwin Hubble
Buzz Aldrin
The correct answer is Edwin Hubble
So why is this answer correct? : In 1931, Einstein met with Edwin Hubble at the Mount Wilson Observatory near Los Angeles to discuss space and cosmology. While Einstein had previously imagined a static universe, Hubble concluded that the universe is actually expanding.