which satellite went to edge of solar system
View full size image. The unmanned Voyager 1 and 2 probes were launched in 1977 on a mission to visit all the outer planets of the solar system. After 35 years in space, the twin probes are approaching the edge of our solar system. [ See how the Voyager spacecraft worked in this SPACE.com infographic here ]. Credit: Karl Tate, SPACE.com.