Voyager 1 Probing Solar System's Distant Edge

The Voyager 1 spacecraft is now 11 billion miles from Earth, speeding along at 38,000 miles per hour towards the edge of the heliosphere, the bubble that surrounds the solar system. Voyager chief scientist Ed Stone discusses the craft's discoveries about the environment at the edge of the solar bubble.

Source: http://www.npr.org/2011/06/17/137250831/voyager-1-probing-solar-systems-distant-edge?ft=1&f=1007

harry reid john mccain al gore bill clinton newt gingrich