View of a globular cluster (artist’s impression)
This video shows an artist’s animation of a globular cluster. Globular clusters are huge balls of old stars that orbit the centres of galaxies. Many of them were once little galaxies, cannibalised by their larger companions over the history of the Universe.
More information and download options: http://www.spacetelescope.org/videos/heic1321c/
NASA, ESA, and M. Kornmesser