As the crisp autumn air rolls in, October presents a prime opportunity for stargazers to witness the beauty of the Andromeda Galaxy (M31). Just as the Milky Way’s closest neighbor climbs high above ...

Add Yahoo as a preferred source to see more of our stories on Google. Late October presents a perfect opportunity to spot the ancient light of the Andromeda galaxy as it climbs high overhead to ...

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The Andromeda galaxy (M31) has been captured by the Chandra X-ray Telescope. See the imagery and hear a sonification of it.

It turns out that looming collision between our Milky Way and Andromeda galaxies might not happen after all. Astronomers reported Monday that the probability of the two spiral galaxies colliding is ...

Astronomers have long known that the Andromeda galaxy, aka Messier 31, a swirling city-state of a trillion stars — plus all the accouterments of gas, dust, dark matter and black holes — is rumbling ...

An international team of astronomers reports the discovery of a new dwarf galaxy, which they have named Pegasus VII. The newfound galaxy, which lies about 2.4 million light years away, was identified ...

Computer simulations carried out by astronomers from the University of Groningen in collaboration with researchers from Germany, France and Sweden show that most of the (dark) matter beyond the Local ...

Great new photos are in of the closest galaxy to our own Milky Way. The Andromeda galaxy lies 2 million light-years away from the Milky Way. Our neighbor is estimated to have nearly one trillion stars ...