Astronomers at the University of Michigan have discovered a new satellite of the Andromeda Galaxy (M31), the Milky Way’s closest major galactic neighbor, and it has broken the record for the ...

It is a panoramic view of the neighboring Andromeda galaxy, located 2.5 million light-years away. It took over 10 years to make this vast and colorful portrait of the galaxy, requiring over 600 ...

A Michigan State University researcher saw X-rays coming from a black hole using the NASA Chandra X-Ray Observatory telescope ...

The first decades of the twentieth century, among the most productive in the history of astronomy ... and is thus also called M31 by astronomers. By the 1920's, M31 was clearly understood to ...

Astronomers at NASA this week, reported that they had completed a decade-long, laborious effort to construct a comprehensive picture ... referred to as M31. The nearest big galaxy to the Milky ...