Invisible shield found thousands of miles above Earth blocks 'killer electrons'

An invisible shield has been discovered some 7,200 miles above Earth that blocks so-called 'killer electrons,' which whip around the planet at near-light speed and have been known to threaten astronauts, fry satellites and degrade space systems during intense solar storms.

Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/b...