Catch a glimpse of the Andromeda Galaxy as it hangs high in the October night sky. Late October presents a perfect ...

Over the course of human history, perhaps no single object in the night sky has drawn more attention than the Andromeda ...

The galaxy, also known as M31, can be seen with the naked eye but appears more spectacular from areas with minimal light pollution.

The Andromeda Galaxy (M31), located 2.5 million light-years away, is the farthest object typically visible to the naked eye under dark skies, appearing as a 4th-magnitude smudge. Edwin Hubble's early ...

The Andromeda galaxy, also known as Messier 31 (M31), is the closest spiral galaxy to the Milky Way at a distance of about 2.5 million light-years. Astronomers use Andromeda to understand the ...

The Milky Way and M31 are the two most massive galaxies in the Local Group. Both of these galaxies, which are separated by about 2.5 million light-years, are also host to many tens of low-mass ...

The next clear evening, before the bright moon washes out the fainter stars, take a look for the Andromeda galaxy. Unless you have significant light pollution, you should be able to see it high in the ...

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

Over the course of billions of years, galaxies grow and evolve by forging new stars and merging with other galaxies through aptly named “galactic immigration” events. Astronomers try to uncover the ...

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 ...