Messier 2

Messier 2 or M2 (aka NGC 7089) is a globular cluster in the constellation Aquarius. It’s one of the larger globular clusters known—rich, compact, and significantly elliptical—containing over 150,000 stars. It’s one of the oldest globulars in our galaxy, around 13 billion years old. This Hubble image shows the core of the cluster.

Image Credits: NASA, ESA, STScI, and A. Sarajedini (University of Florida)

Messier 70

Messier 70 (aka M70 or NGC 6681) is a globular cluster of stars in the southern constellation of Sagittarius. It’s about 29,400 light-years away from Earth and roughly 6,500 light-years from the Galactic Center. M70 has undergone core collapse, so it has a very small core radius of 0.22 light-years.

Image Credit: NASA / ESA

Messier 62

Messier 62 is located relatively close to the galactic center, so tidal forces likely are responsible for its being one of the most irregularly shaped globular clusters. The core of M62 (toward the upper right in this Hubble image) contains around 150,000 stars and its very own stellar mass black hole.

Image Credit: NASA / ESA