Astrophotographer Miguel Claro captured a colorful portrait of the Andromeda Galaxy from the Dark Sky Alqueva Observatory in Cumeada, Portugal.

The Andromeda galaxy (M31) has been captured by the Chandra X-ray Telescope. See the imagery and hear a sonification of it.

A new study suggests that our Milky Way galaxy and its neighboring Andromeda galaxy are already interacting, long before their predicted collision billions of years from now. According to research ...

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 ...

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 ...

2.5-Billion-Pixel Andromeda Galaxy Panorama Worth The Decade Of Hubble Observations And it revealed that this close-by galaxy is a complete "train wreck"!

NASA recently released images of the Andromeda galaxy, an "enticing empire of stars" that can be seen with the naked eye if weather conditions are just right.

Shockingly Tiny Galaxy Near Andromeda Is Just One-Millionth the Size of the Milky Way The fully formed galaxy is remarkably teeny, raising new questions about how galaxies emerge and evolve.

When will the Milky Way collide with the Andromeda Galaxy? It's a common question because, for many years, astronomers have theorized that the two largest spiral galaxies in our cosmic ...

All but one of Andromeda's satellite galaxies were found to be pointing right at us. According to our best models, that shouldn't be the case at all.