Astronomers produced the most complete map of the center of the Milky Way, which can provide insight into how stars and planets are formed.

Astrophysicists have identified the brightest, most distant 'space laser', or gigamaser, originating from a galactic collision 8 billion light-years away.

Seen as it was 8.5 billion years ago, the galaxy shows that the early universe was harsher than scientists previously thought ...

How is it that galaxies merge and collide but the universe is expanding and everything is moving away from everything else? Justin HammersleySterling Heights, Michigan Whether or not galaxies merge ...