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Jean-Philippe Loys de Chéseaux

Jean-Philippe Loys de Chéseaux

m4,ngc 6121,globular cluster

Messier 4

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Messier 4 (M4) is a bright globular cluster located in the southern constellation Scorpius. It lies at an approximate distance of 7,200 light years from Earth and has an apparent magnitude of 5.9. The cluster has the designation NGC 6121 in the New General Catalogue.
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