A new study using data from NASA's Hubble Space Telescope finds that star formation in the nearby Andromeda galaxy has undergone a 500-million-year decline, with an even steeper drop in the last 40 ...

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 the nearest major galaxy to the Milky Way, yet every view of it is ancient. The light reaching Earth tonight began crossing intergalactic space about 2.5 million years ago. That journey ...

Add Yahoo as a preferred source to see more of our stories on Google. A beautiful white and blue spiral galaxy is seen slightly edge-on with a vast black section of space behind it. There are glowing ...

Our nearest large galactic neighbor has been going quiet for half a billion years — and a new study published Monday in The Astrophysical Journal has now mapped that silence, star by star, across ...

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 ...

The Andromeda galaxy, left, is about to collide with part of the Milky Way, as seen from Earth, in a hypothetical merger scenario. Credit: NASA illustration "Based on the best available data, the fate ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. When will the Milky Way collide with the Andromeda Galaxy?

A recent paper reveals we're almost certainly going to collide with a galaxy in the next couple billion years, but it's not the one we thought. Reading time 2 minutes For over a decade, researchers ...