NASA Science News for December 11, 2007 NASA's fleet of THEMIS satellites has made some surprising new discoveries about outbursts of Northern Lights and the source of their power. Findings include giant magnetic ropes that connect Earth to the Sun and explosions in the outskirts of Earth's magnetic field. FULL STORY at http://science.nasa.gov/headlines/y2007/11dec_themis.htm?list1052465
