Andromeda XXXV is only about 20,000 times more massive than our Sun—very small, even for a satellite galaxy. For comparison, ...
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 ...
There is a supermassive black hole at the center of nearly every big galaxy—including ours, the Milky Way (it’s called ...
Lior Shamir, a computer scientist in the Carl R. Ice College of Engineering at Kansas State University, published a study of ...
He calculated M31’s distance as a prodigious 900,000 light ... His measurements marked the end of the Great Debate about the Milky Way’s size and the nature of the nebulae.
Even the little-understood Oort Cloud, at the outer edges of our solar system beyond view, has a partly spiral structure.
The Large Magellanic Cloud is a dwarf galaxy residing near our Milky Way, visible to the naked eye as a luminous patch of ...
Astronomers have discovered strong evidence for the closest supermassive black hole outside of the Milky Way galaxy. This ...