The galaxy cluster appears hotter and more mature than it should for its young age, challenging what we think we know about ...

An inexplicably hot, fast-growing cluster of galaxies in the early universe has scientists questioning theories of galactic ...

The discovery of thousands more galaxies with stars ringing their main disks could help astronomers study galactic evolution ...

Do all stars exist in galaxies, or do some exist in intergalactic space?Thomas GriffilthAtlantic City, New Jersey Nearly all ...

Astronomers have confirmed the first known triple system in which all three galaxies host actively feeding, radio-bright ...

Three merging galaxies host three active black holes, offering rare insight into galaxy and black hole growth.

On a clear night with dark skies, you can catch a glimpse of the Milky Way, a luminous arc stretching across the horizon. To the unaided eye, its translucent clouds are simply beautiful splashes in ...

A team of astronomers looking at galaxies in the universe’s distant past have discovered nine young, compact galaxies, each weighing in at 200 billion times the mass of the Sun. Imagine receiving an ...

The carbon that is a key component of the human body—and all other lifeforms on Earth—may have traveled outside the galaxy after being created before returning on a cosmic "conveyor belt," an author ...