Support WBURNASA Discovers A Ring Around The Solar SystemPlay05:31Download AudioOctober 18, 2009 ShareThis artist's rendering released by NASA shows the Interstellar Boundary Explorer spacecraft. (AP/NASA, Goddard Space Flight Center, Walt Feimer)
This artist's rendering released by NASA shows the Interstellar Boundary Explorer spacecraft. (AP/NASA, Goddard Space Flight Center, Walt Feimer)