Messier catalog

Detail of Hubble image of the globular cluster M22. Credit: ESA/Hubble & NASA

A globular cluster for the new year: M22

By Phil Plait 2 years ago

The core of the globular cluster M2 is packed with stars. Credit: ESA/Hubble & NASA, G. Piotto et al.

Hubble's view of the globular cluster M2: It's full of (weird) stars

By Phil Plait 3 years ago

The core of M 4, at 5,000 light years away the closest globular cluster to Earth, making it a prime target for Hubble Space Telescope. Credit: ESA/Hubble & NASA

Hubble gets Messier

By Phil Plait 4 years ago