Voyager 2, together with its twin companion Voyager 1, are the probes that simply will not stop. Launched in 1977, these spacecraft visited a number of planets within the outer photo voltaic system earlier than tickling the outer fringes of the heliosphere. Voyager 2 is the one spacecraft to review all 4 of the photo voltaic system’s large planets at shut vary. Voyager 2 found a 14th moon at Jupiter. Voyager 2 was the primary human-made object to fly previous Uranus.