Globular Cluster M15

                                                                                    [Photo by NASA / ESA]

“M15 is about 35,000 light years away, and something less than 200 light years across. Over 100,000 stars call M15 home, packed tightly into that ball. How tightly? The nearest star to the Sun is Alpha Centauri, a little over four light years away. M15 would crowd over 2000 stars in a cube that size!”  Phil Plait