M31: Andromeda Galaxy
Andromeda galaxy, also called as M 31 is a giant spiral galaxy. Is the object visible to naked eye most away from Earth to 2,5 milions light-years toward Andromeda's constellation.
Is the biggest and brightest into the Local Group of galaxies, with 1,5 times more mass and twice of brilliant than our galaxy. In this image can be saw its two eliptical galaxies satellites: M 32 at upper and M 110 at down.
More info into the Blog C O M E T O G R A F I A (in Spanish)