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Hubble Space Telescope snaps stunning view of crowded cluster

30 Apr 2019, 10:22 UTC
Hubble Space Telescope snaps stunning view of crowded cluster
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This sparkling burst of stars is Messier 75. Image credit: Image 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.
Discovered in 1780 by Pierre Méchain, Messier 75 was also observed by Charles Messier and added to his catalogue later that year. This image of Messier 75 was captured by the NASA/ESA Hubble Space Telescope’s Advanced Camera for Surveys.
Messier 75 is featured in Hubble’s Messier catalogue, which includes some of the most fascinating objects that can be observed from Earth’s Northern Hemisphere. See the NASA-processed image and other Messier objects here.
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