Pleiades
Pleiades (astronomy), loose cluster of 400 to 500 stars, about 415 light-years from the solar system in the direction of the constellation Taurus . The stars are about 1 light-year apart, on the average, and photographs show them to be surrounded by a nebulosity that shines by their reflected light . The cluster was named by the ancient Greeks after the “Seven Sisters” of mythology . Observers have claimed to be able to see with the naked eye as many as 12 of the stars in the cluster.