Four billion years from now, the Milky Way galaxy as we know it will cease to exist. Our Milky Way is bound for a head-on collision with the similar-sized Andromeda galaxy, researchers announced today ...

Dr. Pierre Martin and his team created an animation showing two galaxies colliding more than 440 million years ago.

Will the Milky Way and Andromeda galaxies collide in several billion years? The odds have changed with a new study using 100,000 supercomputer simulations. Credit: NASA's Goddard Space Flight Center ...

Astronomers have discovered a flattened structure of matter around the Milky Way that explains the unusual motion of nearby ...