The Pleiaes (pronounced /ˈpliːədiːz/ or /ˈplaɪədiːz/), also known as M45, the Seven Sisters, Seven Stars, SED, Matariki or (in Japan) Subaru, is an open cluster in the constellation of Taurus. It is among the nearest star clusters, and is probably the best known, and is certainly the most obvious to the naked eye. It is sometimes referred to as the Maia Nebula, perhaps erroneously considering that the reflection nebulosity surrounding Maia is intrinsic (see below).