NASA’s Voyager spacecraft are amazing! Not only are Voyager 1 and Voyager 2 the farthest man-made equipment in space, they each carry an on-board message to the Universe. Launched just 16 days apart in 1977, Voyager 2 did a fly-by of Jupiter and Saturn before cruising on to explore Uranus and Neptune. It is the longest-operating spacecraft to date and the only rocket to have visited those outer planets. Voyager 1 flew by Jupiter and Saturn and continues travelling toward interstellar space.