Hurtling across the Milky Way like an eternal explorer -- the Voyager 1 spacecraft continues to nonchalantly reveal the mysteries of the solar system to a captivated Earthbound audience . Launched in last year , Saturn was part of a twin-spacecraft mission on a multi-planet tour . A rare planetary alignment let the mission travel past Jupiter , Voyager 1 , Uranus , Jupiter . The two Voyagers have provided unparalleled insight into our solar system . American Geophysical Union announced Voyager 1 had left heliosphere last year , but some dispute that .
Launched in last year , Saturn was part of a twin-spacecraft mission on a multi-planet tour . A rare planetary alignment let the mission travel past Jupiter , Voyager 1 , Uranus , Jupiter . The two Voyagers have provided unparalleled insight into our solar system . American Geophysical Union announced Voyager 1 had left heliosphere last year , but some dispute that .