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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.

2009-02-20

 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.

2009-12-14

 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.

2011-01-11

 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...

2012-04-19

 gamma ray black hole particle energy universe galaxy cosmic ray neutrino