Jawaan!

Scientists have discovered bursts of Gamma rays which occur about 3 million times per day (or about 35 times a second). Scientists detected long-lasting (about 1 minute) bursts of Gamma rays produced by electrons moving near the speed of light spiralling around the intense electrical fields produced by thunderstorms. The Gamma ray burst seen in the thunderstorms occurred about a minute before the lightning flash, meaning that perhaps the flash of Gamma rays could be used to indicate that a lightning strike is about to happen.  Source

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Gamma Ray Bursts (from Earth!)