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Artist's conception of gamma-ray burst and related phenomena.

Original Caption: Artist's conception of lightning strikes above the clouds triggering gamma-ray bursts. The red spark is a red sprite, blue jets are the short ones, and the TGF is the purple flash. Click on image for animation or download broadcast quality animation or print resolution still. (No audio) Credit: NASA.

This file is in the public domain because it was created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (NASA copyright policy page or JPL Image Use Policy)

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