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.

Fresh evidence claims that the Earth and the surrounding galaxy are suspended inside a cosmic void based on echoes from the ...

A hundred years ago, astronomer Edwin Hubble revealed a universe of galaxies that existed beyond ours. His influence in astronomy continues to this day.

Andromeda and the Milky Way’s Collision Delayed Indefinitely? A new twist in the Andromeda-Milky Way collision theory emerged with the publication of a study in Nature Astronomy.