Massive stars know how to go out in style. Some of the brightest, longest-lived flares probably come from megastars getting shredded by supermassive black holes, researchers report in the June 6 ...

Astronomers have uncovered a new extreme in the universe's catalog of violent phenomena — a class of cosmic explosions so powerful that they rank among the most energetic events since the Big Bang.

A brief X-ray flash caught by a Chinese-European space telescope has led astronomers to identify what may be an entirely new ...

There is a chance of powerful X-class solar flares that are capable of causing radio blackouts over the next three days, according to forecasters. The National Oceanic and Atmospheric Administration ...