Harlow Shapley
Shapley believed that “spiral nebulae” like the Andromeda Galaxy were simply features in the Milky Way. He argued this point in the Great Debate of 1920.
Credit:Armagh Observatory
Shapley believed that “spiral nebulae” like the Andromeda Galaxy were simply features in the Milky Way. He argued this point in the Great Debate of 1920.
Credit:Armagh Observatory
