The brightest stars in the cluster represent the Pleiades, the Seven Sisters in Greek mythology, and their parents, the nymph Pleione and the Titan Atlas.
Messier 45 is one of the nearest star clusters to Earth. Its brightest stars lie at a distance between 390 and 460 light years. The cluster is mostly composed of hot, blue, highly luminous stars belonging to the spectral class B with an estimated age under 100 million years.
Read More »Pleiades: The Seven Sisters (Messier 45)