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An ancient star city circles our galactic twin. In fact... it's *too* ancient

2 Dec 2020, 14:00 UTC
An ancient star city circles our galactic twin. In fact... it's *too* ancient ESO

Astronomers have found that a giant cluster of stars orbiting the Andromeda Galaxy is incredibly deficient in heavy elements, so much so that it totally blows away any previous record. This likely means it's terribly ancient, perhaps older than any other such cluster ever seen. It also changes what astronomers think about how such clusters are born.

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