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 ...

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 ...

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

NASA astronomers announced Thursday, May 31, that they can now predict with certainty the next major cosmic event to affect our galaxy, the Sun, and the solar system: the titanic collision of our ...

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 single photograph taken from orbit has managed to make a rare visual connection between the mundane life on Earth and the ...

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” ...

Newly forming stars glow fiery bright in this infrared image of the Andromeda Galaxy taken by the European Space Agency's Herschel spacecraft. The galaxy's spiral structure, which is similar to that ...

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 ...

The Andromeda galaxy is one of the most commonly studied objects in the night sky. It's just 2.5 million light years from Earth, is visible to the naked eye on a moonless night and has been imaged ...

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 ...