NASA Science News for January 15, 2010

Last year, when NASA's IBEX (Interstellar Boundary Explorer) spacecraft discovered a giant ribbon at the edge of the solar system, researchers were mystified. They called it a "shocking result" and puzzled over its origin. Now the mystery may have been solved.

FULL STORY at

http://science.nasa.gov/headlines/y2010/15jan_ibex2.htm?list1035898