NGC 604: Giant Stellar Nursery . ... Credit Copyright: Hubble Legacy Archive , ESA , NASA ; Processing - Donald Waid Explanation: Stars are sometimes born in the midst of chaos. About 3 million years ago in the nearby galaxy M33 , a large cloud of gas spawned dense internal knots which gravitationally collapsed to form stars. NGC 604 was so large, however, it could form enough stars to make a globular cluster. ... NASA Web Site Statements, Warnings, and Disclaimers . ...