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 ...

Something enormous is on its way to our cosmic neighborhood. The Milky Way, along with our closest major neighbor the ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. This illustration shows a stage in the predicted merger ...

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 ...

The Andromeda Galaxy, or M31, isn’t just a great-looking spiral galaxy. It’s also the closest to us, which makes it visible to the naked eye from here on Earth. But the fact it’s (well, relatively) so ...

Add Yahoo as a preferred source to see more of our stories on Google. Astronomers have long believed that our Milky Way will eventually collide with the Andromeda galaxy. A new study suggests that we ...

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 ...

Add Yahoo as a preferred source to see more of our stories on Google. A close-up view of a prodigious number of stars in the Andromeda galaxy. The Andromeda galaxy is a colossal marvel in our sky, ...

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?

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 ...

Astronomers are celebrating the completion of a 2.5-billion-pixel panoramic picture of the entire Andromeda galaxy. The team includes several UC Santa Cruz researchers who made significant ...

The Andromeda Galaxy is the closest galaxy to the Milky Way. Visible from Earth with the naked eye or through telescopes, it is not alone, and European astronomers have recently discovered a new ...