The Trapezium Cluster itself, first observed by Galileo as a group of stars, is an [[open cluster]] of eight known newborn stars, several of which are [[binary star|binaries]]. The cluster was created right out of the nebula and each of the stars are within 1.5 light years of each other. It may be part of the larger '''Orion Nebula Cluster''', which contain some 2,000 stars in total, spread over an area of 20 light years. | The Trapezium Cluster itself, first observed by Galileo as a group of stars, is an [[open cluster]] of eight known newborn stars, several of which are [[binary star|binaries]]. The cluster was created right out of the nebula and each of the stars are within 1.5 light years of each other. It may be part of the larger '''Orion Nebula Cluster''', which contain some 2,000 stars in total, spread over an area of 20 light years. |