Messier 75 tagged posts

Hubble Snaps a Crowded Cluster

Hubble image of Messier 75, taken with the telescope’s Advanced Camera for Surveys.
Credit: ESA/Hubble & NASA, F. Ferraro et al.

This sparkling burst of stars is Messier 75. It is a globular cluster: a spherical collection of stars bound together by gravity. Clusters like this orbit around galaxies and typically reside in their outer and less-crowded areas, gathering to form dense communities in the galactic suburbs.

Messier 75 lies in our Milky Way galaxy in the constellation of Sagittarius (the Archer), around 67,000 light-years away from Earth. The majority of the cluster’s stars, about 400,000 in total, are found in its core; it is one of the most densely populated clusters ever found, with a phenomenal luminosity of some 180,000 times that of the Sun...

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