[MIham] Astronauts see "sprites" and "trolls" from Earth orbit

[Frank]

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 ofhttp://spaceweather.com