Open Cluster M50 . ... Explanation: Many stars form in clusters. Two types of star clusters are visible in our Milky Way Galaxy : open clusters and globular clusters. Open clusters like M50, shown above , typically contain hundreds of stars, many of which are bright, young, and blue. In fact, most of the bright blue stars in the above picture belong to M50 , but most of the dimmer, red stars do not. ... NASA Web Site Statements, Warnings, and Disclaimers . NASA Official: Jay Norris. ...