Andromeda is about 260,000 light-years wide, according to NASA, making it the largest galaxy in the Local Group.However, its mass is roughly comparable to or even less than that of the Milky Way ...

The Andromeda galaxy is also known as Messier 31. It is a spiral galaxy located about 2.5 million light-years from Earth. On ...

The Andromeda Galaxy (M31) is a typical spiral of stars, dust, and gas. ... However, it does not preclude the possibility for colonization of habitable planets around nearby stars.

Of these, the new technique found that 1,284 were planets at a confidence level of 99 percent or greater. An additional 1,327 are likely planets, but did not reach the 99 percent confidence threshold.

Our Milky Way galaxy is a cannibal. It has grown by consuming other galaxies. Yet, it too, may be destined to collide and merge with an even bigger galaxy: Andromeda. Though galaxy collisions are ...