... The Brown Dwarfs of Orions Trapezium . ... WFPC2 data: C. O'Dell and S. Wong ( Rice ) Explanation: The bright stars above are well known as heart of the Trapezium , an open cluster of stars in the center of the Orion Nebula . ... Although many more brown dwarfs than hot stars have now been found in Orion, their very low masses make them inadequate to compose much of the dark matter expected in galaxies and the Universe . ... Publications with keywords: Orion - trapezium - brown dwarf . ...