Andromeda

Andromeda, The Chained Lady, is not very bright, containing only 2 second-magnitude stars. But this constellation is famous for hosting M31, the huge spiral galaxy that is the second large part of the Local Group, after our Milky Way. M31 is the farthest object visible to the naked eye, lying almost 3 million light years from Earth. The Local Group is the small galaxy cluster that contains the Milky Way, M31, and about 30 other small galaxies all moving together across the Universe.
Although Andromeda lies partly in the Milky Way, it does not contain any other prominent objects. Alpheratz, the brightest star in Andromeda, is a binary system, consisting of two large stars in close orbit. Mirach, the second brightest star in Andromeda, is a red giant star, almost 100 times as large and 1000 times as bright as our sun, but is only of second magnitude due to its distance of 200 light years. The only other star in this constellation of note is Almaak, which forms the lower foot of 'The Lady'. Almaak is a quadruple system, formed from a beautiful telescopic double, a golden yellow star and an indigo blue star, which is itself a triple system.