Andromeda Galaxy
The Andromeda Galaxy (M31) is the nearest major galaxy to the Milky Way, located about 2.5 million light-years away. It is a spiral galaxy similar in structure to our own.
Source: science.nasa.gov
APODs including "Andromeda Galaxy"
Dwarf Elliptical Galaxy M32
06/01/1996
Being the largest galaxy around can sometimes make you popular. Pictured is M31's companion galaxy M32. M31, the Andromeda galaxy, is the largest galaxy in our Local Group of galaxies - even our tremendous Milky Way Galaxy is smaller. Little M32 is visible in most pictures of M31 - it is the small circular spot north of M31's center. M32 is a dwarf elliptical galaxy. Elliptical galaxies have little or no measurable gas or dust - they are composed completely of stars and typically appear more red than spiral galaxies. Elliptical galaxies do not have disks - they generally have oblong shapes and therefore show elliptical profiles on the sky.