In 1920, astronomers Harlow Shapley and Heber Curtis held a Great Debate. Shapley argued that the spiral nebulae were small and in the Milky Way, while Curtis took a more radical position that they ...
If you buy through a BGR link, we may earn an affiliate commission, helping support our expert product labs. Ring galaxies are some of the rarest galaxies found throughout our universe, and for ...
Lenticular galaxies lie somewhere between spirals and ellipticals in ... are influenced by various processes, leading to ...