Andromeda has slowed its star-forming rate over the last 40 million years. Scientists think they finally know why.

The most luminous galaxy ever discovered is cannibalizing not one, not two, but at least three of its smaller neighbors The material that the galaxy is stealing from its neighbors is likely ...

We’ve never met some of the Sun’s closest neighbors until now. In a new study, astronomers report the discovery of 95 objects known as brown dwarfs, many within a few dozen light-years of the Sun.