Particular stars called Cepheid variables allow astronomers to determine distance, and Hubble spotted one of these within M31 ...

“For example, Chandra’s X-rays reveal the high-energy radiation around the supermassive black hole at the center of M31 as ...

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

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

Witness the breathtaking beauty of our home galaxy, the Milky Way, through 6 stunning images captured by NASA's Hubble Space Telescope.

As Hubble already discovered, galaxy movements within the Local Group don’t show the same cosmological spectral shifts as galaxies beyond. In fact, the spectral shift of the spiral galaxy M31 ...

Here’s some good news: Our galaxy may not be destined to end in a fiery collision with the Andromeda galaxy as soon as previously thought. While earlier research regarded the collision as a virtual ...