The riddle of an x-ray signal spotted decades ago may have finally been solved, as the dying scream of a star was caught in a lethal tug of war between two giant black holes The decades-long riddle of an x-ray signal from space may have been solved by boffins who think a star was ripped apart by a pair of black holes (Image: Getty Images)

A puzzling X-ray signal picked up decades back may finally have an explanation. It could be the last gasp of a star that was unlucky enough to be ripped apart by two gigantic black holes.

XID 925 was first spotted in 1999 in the Chandra X-ray Observatory's Deep Field South survey. Astronomers have followed the signal closely ever since, watching the initially bright pinprick of radiation grow dimmer and dimmer, dwindling to just a fortieth of

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