An open star cluster well after burning away the gas cloud star factory womb. There's lots of these if you just take a pair of binoculars to the milky way. The Big Dipper constellation is the only real star constellation where the majority of the stars really came from the same star factory gas cloud. As these star clusters go about the milky way galaxy, they get dispersed. It's interesting to see the various star clusters seeable through a pair of binoculars at different stages of getting absorbed into the general motions of our galaxy.