Voyager probes set to enter interstellar space
Thursday, April 28, 2011 - 20:30
in Astronomy & Space
More than 30 years after they left Earth, NASA's twin Voyager probes are now at the edge of the solar system. Not only that, they're still working. And with each passing day they are beaming back a message that, to scientists, is both unsettling and thrilling.