Scientists have detected emanating from the nucleus of a galaxy relatively close to our Milky Way flashes of X-rays gradually ...

This is the largest photomosaic yet assembled from Hubble Space Telescope observations. It is a panoramic view of the Andromeda galaxy, located 2.5 ...

The Sagittarius A* supermassive black hole at the core of the Milky Galaxy may be "warping the spacetime surrounding it into a shape that can look like a football," according to the Chandra X-ray ...

Hubble revealed a universe of galaxies that existed beyond ours — but he couldn't have done it without a little help.

Leo P, a small galaxy and a distant neighbor of the Milky Way, is lighting the way for astronomers to better understand star formation and how a galaxy grows. Scientists have reported finding that Leo ...

NASA has released this photomosaic in two images that can be downloaded from its website: ...

Yale researchers among those who discovered three “ultra-massive” galaxies, which were formed shortly after the Big Bang and ...

In the years following the launch of NASA's Hubble Space Telescope, astronomers have tallied over 1 trillion galaxies in the universe. But only one galaxy stands out as the most important nearby ...

Average stars like our sun die ignominiously. They swell to enormous size, cool from yellow to red hot, and shed most of ...

Feeding supermassive black holes are more common in the cosmos than previously suspected. What could possibly hide such ...

The universe could be home to far more supermassive black holes than we realised, according to new research. Astronomers from ...