Central to these galaxies are supermassive black holes, which ultimately must merge as well, resulting in the formation of even larger black holes. However, a longstanding question has puzzled ...

Two different space telescopes have looked at the same galaxy, so you can see the difference in how they observe the universe ...

"Why do they have the same rotation? They must have a connection with each other — that would be a very strong question that ...

"Dynamical activity in this galaxy group has now been reawakened by a galaxy smashing through it at an incredible speed of ...

A galaxy collision in Stephan’s Quintet has created a powerful shockwave, providing vital data on galactic evolution.

Astronomers have clocked a cosmic collision at 3.2 million km/h (2 million mph). A new instrument has spotted a galaxy ...

Space scientists have observed five galaxies colliding at a staggering 2 million mph. The dramatic impact has been observed ...

Two giant black holes causing strange flashes of light about one billion light years away from Earth have been detected by ...

NASA captured this image of NGC 1316 galaxy which is about 60 million light-years away in the constellation Fornax. Centaurus A is a giant elliptical galaxy that's known for being the fifth brightest ...

The Epoch of Reionization — the universe’s last major transition — may have happened earlier than previously thought.

A galaxy traveling at a blistering two million miles per hour (3.2 million km/h) has torn through five neighboring galaxies, creating one of the most powerful intergalactic shock waves ever observed.

For a long time, astronomers believed galaxy formation followed a very specific model: cosmic gas collects in clumps, stars ...