These things take millions of years to go from one stellar neighborhood to another, so this thing has likely been traveling ...

I/ATLAS, earlier known as A11pI3Z, is only the third interstellar visitor to be discovered passing through our corner of the ...

The Milky Way's core will be visible this month and through August. Here's what Tennessee stargazers should know.

NASA's Chandra X-ray Observatory provides a new look at the Andromeda galaxy in this multi-wavelength image that includes ...

A new composite image of the Andromeda Galaxy is offering an unprecedented view of our closest spiral galactic neighbor.

NASA has released a breathtaking new image of the Andromeda Galaxy, our closest galactic neighbor. Also known as Messier 31, or M31, Andromeda is located about 2.5 million light-years from Earth.

The Andromeda galaxy is also known as Messier 31. It is a spiral galaxy located about 2.5 million light-years from Earth. On ...

Nearly 400 years ago, Galileo looked at the Pleiades star cluster through his telescope and noticed that the seven or so ...

NASA's Chandra X-ray space telescope has captured a breathtaking image of the neighboring Andromeda galaxy, in a tribute to ...

NASA's Chandra Observatory has combined different wavelength images of the Andromeda galaxy to honor astronomer Vera Rubin, ...