A way of using variable stars—stars that changed their light output in a repeating cycle—allowed astronomers to determine distances to star groups ... to the Andromeda Galaxy much more ...

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

Astronomers at the University of Michigan have discovered a new satellite of the Andromeda ... whose star formation shut off much later in the game. The authors stress that because the galaxy ...

Dozens of dwarf galaxies swarming around the Andromeda ... our galaxy's sphere of influence, where gravitational tidal forces stirred up pockets of gas to reignite the process of star birth.

The second-most important star is nestled inside the Andromeda galaxy. Don't go looking for it—the flickering star is 2.2 million light-years away, and is ... Massive stars about eight times ...