Astronomers have unveiled the largest-ever photomosaic of the Andromeda galaxy, a sprawling celestial giant with over 1 ...

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

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 ...

The Hubble Space Telescope has generated the most comprehensive survey yet of the Andromeda galaxy, the nearest galactic neighbor to the Milky Way. The new mosaic of about 2.5 billion pixels yields ...

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 ...