Source - Space Weather News for Aug. 20, 2015: http://spaceweather.com
This month, astronauts onboard the International Space Station have
witnessed exotic forms of lightning that reach up from thunderclouds
near Earth's surface all the way to the edge of space. Their
photographs of "sprites" and "trolls" dancing over Mexico are a
must-see. These forms can been seen from Earth's surface, too.
Observing tips and more information are available on today's edition of http://spaceweather.com
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