Similarly, for gamma-ray bursts to come from billions of light years away—as it now seems certain that they do—they must have more power than anything previously known to astronomers.

For over a decade, a star system on the verge of unleashing a deadly gamma ray burst appeared to have its guns trained on Earth. The so-called "Death Star," which is also famed for looking like a ...

WEST LAFAYETTE, Ind. -- An international team of astronomers has observed extremely rapid bursts of high-energy gamma rays from a distant galaxy, an observation that is challenging how astronomers ...

A nearby gamma-ray burst could kill us all ... we just have to hope that there isn't a strange increase or decrease in the power that the Sun puts out, which could affect our ability to live ...

But for a supernova to produce the strongest type of gamma-ray burst, the star must be some 30 to 40 times the size of the sun. This new powerful detection, so rare that we'll likely only observe ...

Here’s how it works. The "cosmic pinwheel" that astronomers feared could one day shower Earth with lethal gamma rays may not be as dangerous as once thought, a new study suggests. At the heart ...

MACE will enable scientists to observe high-energy gamma rays that originate from some of the universe's most energetic phenomena, such as supernovae, black holes, and gamma-ray bursts.