In 1920, astronomers Harlow Shapley and Heber Curtis held a Great Debate. Shapley argued that the spiral nebulae were small ...

The new composite image, which combines hundreds of photos from the Hubble Space Telescope, shows the Andromeda Galaxy with more than 200 million individually resolved stars.

What will happen to the solar system when the Milky Way completes the merger with the Andromeda Galaxy? Bryan ...

Centaurus A: NGC 5128 is a galaxy in constellation Centaurus, discovered in 1826 by Scottish astronomer James Dunlop. Messier ...

Scientists predict Andromeda and the Milky Way will collide in about 4.5 billion years—reshaping the night sky forever!.

The astronomical panorama is a major accomplishment because Andromeda is the “closest” large galaxy to ours, at a distance of 2.5 million light years away — equal to the diameter of the Milky Way disk ...

Astronomers spent a decade compiling this special image with the Hubble Space Telescope and then stitched together 600 photos ...

the closest galaxy to the Milky Way. The resulting colossal image was stitched together from 600 different fields of view, is made of at least 2.5 billion pixels and took more than a decade to create.

"These two supernova remnants are helping us to better understand the dynamics of our home galaxy’s neighborhood," ...

Using NASA's James Webb Space Telescope, Northwestern astrophysicists gained the longest, most detailed glimpse yet of the supermassive black hole at the center of the Milky Way.