Exploration of Jupiter Exploration of Jupiter The exploration of Jupiter has been conducted via close observations by automated spacecraft. It began with the arrival of "Pioneer 10" into the Jovian system in 1973, and, , has continued with eight further spacecraft missions. All of these missions were undertaken by the National Aeronautics and Space Administration (NASA), and all but two have been flybys that take detailed observations without the probe landing or entering orbit. These probes make Jupiter the most visited of the Solar System's outer planets as all missions to the outer Solar System have used Jupiter flybys to reduce fuel requirements
Jupiter trojan will then return to the vicinity of Earth for a gravity assist to take it to Jupiter's Trojan cloud where it will visit 617 Patroclus. The Japanese space agency has proposed the OKEANOS solar sail for the late 2020s to either analyse a Trojan asteroid "in situ" or to perform a sample-return mission. Jupiter trojan The Jupiter trojans, commonly called Trojan asteroids or simply Trojans, are a large group of asteroids that share the planet Jupiter's orbit around the Sun. Relative to Jupiter, each Trojan librates around one of Jupiter's two stable Lagrange points: ', lying 60° ahead of the