Our Milky Way galaxy is a cannibal. You might wonder what would happen if our disk-shaped spiral galaxy were to one day collide with Andromeda, which is over twice the size of the Milky Way.

A new study of M31, also known as Andromeda, explains how our cosmic neighbor kills off smaller nearby galaxies.

How would you like to see the farthest thing visible to the naked eye? It’s possible, but you’ll need to bundle up and sit back on a lawn chair. Your neighbors may think you’ve cracked up sitting out ...

The Andromeda Galaxy (M31) is the closest large spiral galaxy to the Milky Way, visible to the naked eye and set to merge with our galaxy in the distant future The Nearest Large Spiral Galaxy: ...

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 ...

This is the largest photomosaic ever assembled from Hubble Space Telescope observations. It is a panoramic view of the neighboring Andromeda galaxy, located 2.5 million light-years away. It took over ...

"Beyond the Milky Way lie billions of other galaxies, drifting a few million light years from one another like lily pads floating on the surface of a pond." — Timothy Ferris in Seeing in the Dark A ...

An international team of researchers led by an astronomer from the University of Sydney has found proof that the Andromeda galaxy, Milky Way's neighbor, is expanding due to its cannibalistic diet: ...

The near-Earth asteroid Eros will pass by the galaxy Andromeda this evening. The rare event will be streamed live.

Scientists using NASA’s Hubble Space Telescope have discovered that the immense halo of gas enveloping the Andromeda galaxy, our nearest massive galactic neighbor, is about six times larger and 1,000 ...

How would you like to see the farthest thing visible to the naked eye? It’s possible, but you’ll need to bundle up and sit back on a lawn chair. Your neighbors may think you’ve cracked up sitting out ...

In a landmark study, scientists using NASA’s Hubble Space Telescope have mapped the immense envelope of gas, called a halo, surrounding the Andromeda galaxy, our nearest large galactic neighbor.