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
Space probe (first weather balloons deployed on another planet) at Venus before their rendezvous with Halley's Comet. This Japanese probe was the first non-US, non-Soviet interplanetary probe. A second Japanese probe, it made ultraviolet wavelength observations of the comet. The first space probe to penetrate a comet's coma and take close-up images of its nucleus. First solar wind sample return probe from sun-earth L1. First sample return probe from a comet tail. First probe to land on an asteroid. First sample return probe to launch from an asteroid. The Rosetta space probe flew by two asteroids and made a rendezvous and orbited