Giant Ribbon Discovered At Edge Of Solar System

Huntsville AL (SPX) Oct 20, 2009 -
For years, researchers have known that the solar system is surrounded by a vast bubble of magnetism. Called the "heliosphere," it springs from the sun and extends far beyond the orbit of Pluto, providing a first line of defense against cosmic rays and interstellar clouds that try to enter our local space.

http://www.spacedaily.com/reports/Giant_Ribbon_Discovered_At_Edge_Of_Solar_System_999.html