To determine the size of the Andromeda galaxy, the team used a technique that calculates the speed required for a quick-moving star to escape the gravitational pull of its host galaxy. This required ...

Due to its proximity to the Milky Way, the Andromeda galaxy appears six times the diameter of the full moon in the sky (as seen from Earth) which was a lot of "celestial real estate" for Hubble's ...

The Andromeda Galaxy and the Milky Way are the closest neighbors despite that incredible distance. Still, without a doubt, Andromeda is a larger galaxy, possibly twice the diameter of our Milky Way.

Andromeda is a classic spiral, with graceful arms that rotate around a central bulge. It stretches across 220,000 light-years, twice the size of the Milky Way.

The Andromeda galaxy lies 2.5 million light-years away and looks like a faint spindle, about 6 times the diameter of the full Moon. It is considered a near-twin to the Milky Way galaxy.

The Hubble Space Telescope has generated the most comprehensive survey yet of the Andromeda galaxy, the nearest galactic neighbor to the Milky Way. The new mosaic of about 2.5 billion pixels ...

The Andromeda galaxy is also known as Messier 31. It is a spiral galaxy located about 2.5 million light-years from Earth. On a clear night, some stars of the galaxy can be seen from Earth.

Located about 2.5 million light-years from Earth, Andromeda, which is also known as Messier 31m has been a focus of the space community for more than a century, with early observations dating back ...

A collision between our Milky Way galaxy and its largest neighbor, the Andromeda galaxy, predicted to occur in about 4.5 billion years, has been anticipated by astronomers since 1912.

While they used the radial velocity of the larger galaxy to determine this, they didn't properly take Andromeda's transverse velocity into account, this new study claims.