Celestial hemisphere:  Southern  ·  Constellation: Sagittarius (Sgr)  ·  Contains:  NGC 6522  ·  NGC 6528
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Globular Clusters in Sagittarius NGC 6522, Paulo Cacella
Globular Clusters in Sagittarius NGC 6522
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Globular Clusters in Sagittarius NGC 6522

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Description

NGC 6522 is a globular cluster in the constellation Sagittarius. It was discovered by William Herschel on June 24, 1784. It is centered in a region of the sky known as Baade's Window.[1]

NGC 6522 is possibly the oldest star cluster in the Milky Way,[4] with an age of more than 12 Gigayears.

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Globular Clusters in Sagittarius NGC 6522, Paulo Cacella