Globular star cluster Messier 9 (M9) has over 300,000 stars within a diameter of about 90 light-years. It is 25,000 light-years from Earth, near the central bulge of our Milky Way galaxy in the constellation of Sagittarius. Imagine the night sky on a planet orbiting one of these stars!
Starburst Cluster Shows Celestial Fireworks: The cluster is surrounded by clouds of interstellar gas and dust—the raw material for new star formation. The nebula, located 20,000 light-years away in the constellation Carina, contains a central cluster of huge, hot stars, called NGC 3603.