Astronomers have spotted the longest gamma-ray burst ever seen, a cosmic explosion that lasted seven hours — and they determined it could be the work of a black hole destroying a star. Gamma-ray ...

WASHINGTON - Astronomers have witnessed a cosmic explosion bigger and brighter than any except the Big Bang. Orbiting telescopes got the fireworks show last spring when they spotted what is known as a ...

Scientists may have to rethink their playbook for studying gamma-ray bursts, the most powerful known cosmic explosions, after a blast detected in July set a new record by firing energetic jets for ...

It is not often that a handful of pale yellow fragments lying quietly in desert sand end up pulling scientists back into ...

Most gamma-ray bursts—the brightest, most powerful explosions in the universe—are tracked back to the deaths of massive stars. But a new discovery suggests that such enormous explosions can come from ...