Andromeda has slowed its star-forming rate over the last 40 million years. Scientists think they finally know why.

Andromeda is on a slow collision course with the Milky Way, and the merger will reshape both galaxies over billions of years.

Add Yahoo as a preferred source to see more of our stories on Google. This illustration shows a possible view from Earth of the early stages of a predicted merger billions of years from now between ...

The Milky Way and Andromeda have appeared locked on a destructive course for decades. Now, thousands of simulations suggest ...

According to Australian National University, there is now sufficient evidence (albeit in the form of very faint traces) of several small galaxies that Andromeda has been devouring, possible as long ...

A new composite image of the Andromeda Galaxy is offering an unprecedented view of our closest spiral galactic neighbor. Composed by NASA and international space partners, the image combines data from ...

Andromeda is one of the only galaxies you can see without a telescope, provided you find a stretch of sky dark enough. It's ...

A new ultra-faint dwarf galaxy has been discovered in the vicinity of Andromeda (M31), the Milky Way's large neighboring galaxy. The new study, published in Astronomy & Astrophysics suggests that the ...

Andromeda lies 2.5 million light-years away from the Milky Way, a spiral galaxy similar to our own that has allowed scientists to better understand our galactic home. A new composite image reveals our ...

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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 ...