Andromeda Galaxy
Spiral Galaxy
The Andromeda Galaxy, also known as Messier 31, M31, or NGC 224, is a spiral galaxy approximately 780 kiloparsecs from Earth, and the nearest major galaxy to the Milky Way. Its name stems from the area of the sky in which it appears, the constellation of Andromeda.

Age: 9 billion years
Number of stars: 1 trillion
Apparent magnitude: 3.44
Apparent mass: 1.23 trillion solar-mass
Distance to Earth: 2,537,497 light-year