Items waiting in the Pocket queue: 2323

Enter one or more words
Enter one or more words
Enter one or more words
Astronomers have recorded the most powerful radiation blast from deep space yet detected. The source of the blast is assumed to be the catastrophic implosion of a star, to create a black hole.


 star black hole implosion gamma ray
In a fraction of a second, these gamma-ray flashes produced by lightning could expose airline travelers to 30 times more radiation than they should receive in an entire year.


 gamma ray lightning thunderstorm radiation
A space telescope has accidentally spotted thunderstorms on Earth producing beams of antimatter. Such storms have long been known to give rise to fleeting sparks of light called terrestrial gamma-ray flashes. But results from the Fermi telescope show they also give out streams of electrons and their antimatter counterparts, positrons.


 antimatter thunderstorm lightning positron gamma ray
The mystery surrounding the source of the highest-energy particles known in the Universe has grown deeper. The particles, known as cosmic rays, can show up with energies a million times higher than the biggest particle accelerators on Earth can produce. Astrophysicists believed that only two sources could make them: supermassive black holes in active galaxies, or so-called gamma ray bursts. A study in Nature has now all but ruled out gamma...


 gamma ray black hole particle energy universe galaxy cosmic ray neutrino