Key points: Lightning is directly linked to events that produce some of the highest-energy light naturally made on Earth: terrestrial gamma-ray flashes (TGFs).

Key points: Lightning is directly linked to events that produce some of the highest-energy light naturally made on Earth: terrestrial gamma-ray flashes (TGFs). NASA's Fermi Gamma-ray Space Telescope was recently fine-tuned to better catch TGFs. NASA’s scientists observed antimatter structures forming above thunderstorms on Earth. See aslo http://en.wikipedia.org/wiki/Terrestrial_gamma-ray_flash http://en.wikipedia.org/wiki/Terrestrial_gamma-ray_flash