S&T Watch-51: "Discovery of Magnetosphere"

Scientists discovered the "MAGNETOSPHERE", a layer of ions and electrons, surrounding the earth describe by one physicist as a "Warm Plasma Cloak".

Courtesy: Christopher R.Beha, Harper's Weekly, January 13, 2009.

Detailed Wikipedia article on "MAGNETOSPHERE":
http://en.wikipedia.org/wiki/Magnetosphere

Grateful thanks to Christopher R.Beha and Harper's Weekly.