![]() The spacecraft is now in its extended mission of studying interstellar space. Voyager 2 successfully fulfilled its primary mission of visiting the Jovian system in 1979, the Saturnian system in 1981, Uranian system in 1986, and the Neptunian system in 1989. Voyager 2 was the fourth of five spacecraft to achieve Solar escape velocity, which allowed it to leave the Solar System. ![]() Voyager 2 remains the only spacecraft to have visited either of the ice giant planets. As a part of the Voyager program, it was launched 16 days before its twin, Voyager 1, on a trajectory that took longer to reach gas giants Jupiter and Saturn but enabled further encounters with ice giants Uranus and Neptune. Voyager 2 is a space probe launched by NASA on August 20, 1977, to study the outer planets and interstellar space beyond the Sun's heliosphere. ![]() In the SVG file, hover over a trajectory or orbit to highlight it and its associated launches and flybys. Plots 2 to 4 are third-angle projections at 20% scale. Plot 1 is viewed from the north ecliptic pole, to scale. Markers denote positions on 1 January of each year, with every fifth year labelled. ![]() Heliocentric positions of the five interstellar probes (squares) and other bodies (circles) until 2020, with launch and flyby dates.
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