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Ancient stars concentrated in a huge globular cluster

8 Nov 2019, 08:53 UTC
Ancient stars concentrated in a huge globular cluster ESA/Hubble & NASA, G. Piotto et

Well positioned in the evening sky for viewers in the northern hemisphere, Messier 2, also known as NGC 7089, is one of the largest globular clusters known, with about 150,000 stars stretching across 175 light years. Thought to be about 13 billion years old, the cluster’s eccentric orbit carries it as far as 171,000 light years from the center of the Milky Way and up to 165,000 light years above and below the galactic plane. 

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