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Giant cluster phenomenally fertile

Stars form fast thanks to snoozing black hole

By
10:57am, August 16, 2012

Nearly 6 billion light-years away, one of the most massive galaxy clusters ever seen is birthing stars at an incredible rate, with its central member producing more than 700 suns per year in its cold, cold heart.

“It should be producing less than one, and it’s producing 740,” says Michael McDonald of MIT, coauthor of a study describing the cluster in the Aug. 16 Nature.

The cluster’s cold core and excessive fertility suggest the presence of a slacker black hole

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