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July 24, 2004
Elves, red sprites and blue jets are above us
The first Isual image was returned on 4 July. It showed red sprites - short fluorescent "tubes" glowing like neon lights - reaching to the ionosphere.
Another image showed a brilliant lightning flash with a trio of red sprites above it and a sprite halo encircling it.
...
The red sprites are formed in the regions of molecular disintegration. The blue jets, however, seem to come from the top of thunderclouds.
Elves are rapid bursts of light due to electromagnetic pulses from lightning jolts.
BBC NEWS | Science/Nature | High-altitude light show in focus
Posted by thdyck on July 24, 2004
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