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Published online 5 October 2005 | Nature | doi:10.1038/news021003-5
Corrected online: 18 October 2005

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Elderly probe nails gamma-ray bursts

Collision of dead stars is the answer to 30-year mystery.

Fleeting bursts of gamma-rays from the depths of the Universe have puzzled astronomers for more than 30 years, but a slew of evidence has now confirmed that they originate from almighty collisions between the remnants of dead stars.

Surprisingly, the data that clinched this discovery have come from a burst spotted by an old NASA probe, HETE-2 (High Energy Transient Explorer), which has been in orbit since October 2000.

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