Discover the surprising reason why the Andromeda Galaxy is racing toward the Milky Way at an astonishing 68 miles per second.

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The farthest object in the night sky visible to the naked eye is the Andromeda Galaxy. Find out how far away the Milky Way's ...

Just how far can we see on a clear, dark night? If you’re a regular reader of this column, you know that the stars overhead lie many trillions of miles away, but these make up only a tiny fraction of ...

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 ...

Astronomers have discovered Andromeda XXXVI, an ultra-faint dwarf galaxy orbiting the Andromeda Galaxy, offering insights into dark matter-rich galaxies.

The Andromeda Galaxy, shown here with two of its satellite or companion galaxies, is one of few objects in the night sky visible with the unaided eye that's outside our own Milky Way Galaxy. And I do ...

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 ...