This 2010 artist's rendering depicts NASA's Juno spacecraft with Jupiter in the background. The robotic explorer Juno is set to become the most distant probe ever powered by the sun. Launch is set for Friday aboard an unmanned Atlas V rocket - barely two weeks after NASA's final space shuttle flight.
By MARCIA DUNN
AP Aerospace Writer
CAPE CANAVERAL, Fla. - NASA's upcoming mission to Jupiter can't get much greener than this: a solar-powered, windmill-shaped spacecraft.
The robotic explorer Juno is set to become the most distant probe ever powered by the sun.
Juno is equipped with three tractor-trailer-size solar panels for its 2 billion-mile journey into the outer solar system.