The Pleiades, also known as Seven Sisters and Messier 45 (M45), is an asterism of an open star cluster containing young B-type stars in the northwest of the constellation Taurus. At a distance of about 444 light-years, it is among the star clusters nearest to Earth and is the Messier object nearest to Earth, being the star cluster most obvious to the naked eye in the night sky.1
Open in the gallery: Pleiades