Author Topic: A spacecraft called 'Firefly' is going to investigate:  (Read 860 times)

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Plane

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A spacecraft called 'Firefly' is going to investigate:
« on: January 31, 2010, 07:44:37 PM »
 High-energy bursts of gamma rays typically occur far out in space, perhaps near black holes or other high-energy cosmic phenomena. So imagine scientists' surprise in the mid-1990s when they found these powerful gamma ray flashes happening right here on Earth, in the skies overhead.

They're called Terrestrial Gamma-ray Flashes, or TGFs, and very little is known about them. They seem to have a connection with lightning, but TGFs themselves are something entirely different.

Right: An artist's concept of TGFs. Credit: NASA/Robert Kilgore [more]

"In fact," says Doug Rowland of NASA's Goddard Space Flight Center, "before the 1990s nobody knew they even existed. And yet they're the most potent natural particle accelerators on Earth."


http://science.nasa.gov/headlines/y2010/29jan_firefly.htm