13 billion light-years away, at the very edge of our observable universe, supermassive black holes lurk inside their galactic hosts, feeding.
Planetary rings made of rock or silicates might be common in the Galaxy.
Bright blasts of radiation from the center of a galaxy 3.8 billion light-years from Earth are puzzling astronomers.
In the center of galaxy NGC 4151, a black hole lurks.
A galaxy collision is an impressive creation event, that is, the creation of stars and, in this case, a ring of black holes.
Active black holes were at least 100 times more common 10 billion years ago. So what happened to these once ravenous monsters?
For the first time ever, a black hole has been seen being born out of a supernova of a star perhaps 20 times the mass of our sun.
The powerful radio source in the center of M87 is a supermassive black hole, ripping away at the heart of the galaxy.
We've seen their dazzling beauty, but what exactly is going on in this technicolor picture of the Antennae Galaxies?
An urban legend has developed over the years that the colors in modern astronomical photos are made up in a paint-by-numbers game by publicity-hungry astronomers.