Decades in the making, NASA's X-ray timelapse shows a stellar explosion expanding into space at up to 2% the speed of light.

Researchers at the University of North Carolina at Chapel Hill have contributed to new insights into the most long-lived cosmic explosion ever recorded. The event was a gamma-ray burst that remained ...

The cosmos has a way of rewriting its own rulebook, and a single blast of high-energy light has just forced astronomers back to the first page. Earlier this year, a gamma-ray outburst that raged for ...