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
Galileo Probe data for further insights into the atmosphere, and one way to do this was to study the motion of the probe during the descent down. It was found that at 700 mbar of pressure the winds on Jupiter are prograde and increase to a speed of 170 m/s at 4000 mbars of pressure. Galileo Probe has cospar ID 1989-084E while the orbiter had id 1989-084B. Names for the spacecraft include "Galileo Probe" or "Jupiter Entry Probe" abbreviated JEP. The related COSPAR IDs of the Galileo mission: Galileo Probe The "Galileo" Probe was an atmospheric-entry probe carried by the main "Galileo"