The Andromeda Galaxy (M31) is the largest member of the Milky Way’s gang of galactic neighbors, known as the Local Group. With around a trillion suns worth of mass, Andromeda’s gravitational influence ...

A Hubble Space Telescope optical image of our nearest neighbor galaxy, Andromeda (M31), with an inset X-ray image of the active center made with the XMM-Newton observatory. The newly discovered ...

China's Wide Field Survey Telescope has captured an amazing view of the Andromeda Galaxy (M31). Credit: Space.com | footage ...

Andromeda (M31) is a popular target among astronomers. Under clear dark skies, it is even visible to the naked eye. Its proximity and similarity in structure to our spiral galaxy, the Milky Way, make ...

The 2011 Brit Marling sci-fi film Another Earth posited the idea of a mirrored version of Earth entering the Milky Way. The idea seems preposterous, and it probably is–in the film, the “other Earth” ...

For nearly two decades, astronomers have been asserting that someday, our galaxy will collide with the galaxy Andromeda, and the two will merge. Recently, a group of scientists has challenged the ...

Go into your backyard about 20:30 p.m. EST or thereabouts this weekend and you can see the most incredible thing – the Andromeda Galaxy – one of the farthest objects visible to the naked eye. If you ...

A composite figure of the Andromeda galaxy (M31) highlights the extremely large field of view of NASA's upcoming Wide Field Infrared Survey Telescope (WFIRST). The background consists of ground-based ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. M31, the Andromeda Galaxy, with its companion galaxies, M32 ...

This image from WISE displays the Andromeda galaxy's older stellar population in blue. The disk of the galaxy shows the aftermath of a collision with another galaxy, clear from the warp in the spiral ...