This spectacular group of young stars is the open star cluster NGC 3766 in the constellation of Centaurus (The Centaur). Very careful observations of these stars by a group from the Geneva Observatory using the Swiss 1.2-meter Leonhard Euler Telescope at ESO’s La Silla Observatory in Chile have shown that 36 of the stars are of a new and unknown class of variable star.
This image was taken with the MPG/ESO 2.2-meter telescope at the La Silla Observatory.
Photo credit: ESO
Note: For more information, see New Kind of Variable Star Discovered.