50th Lunar and Planetary Science Conference 2019 (LPI Contrib. No. 2132) 1352.pdf EXPLORATION OF JUPITER. F. Bagenal, Laboratory for Atmospheric & Space Physics, University of Colorado, Boulder CO 80302 (
[email protected]) Introduction: Jupiter reigns supreme amongst plan- zones, hinting at convective motions but images were ets in our solar system: the largest, the most massive, the insufficient to allow tracking of features. fastest rotating, the strongest magnetic field, the greatest • Infrared emissions from Jupiter’s nightside com- number of satellites, and its moon Europa is the most pared to the dayside, confirming that the planet radiates likely place to find extraterrestrial life. Moreover, we 1.9 times the heat received from the Sun with the poles now know of thousands of Jupiter-type planets that orbit being close to equatorial temperatures. other stars. Our understanding of the various compo- • Accurately tracking of the Doppler shift of the nents of the Jupiter system has increased immensely spacecraft’s radio signal refined the gravitational field with recent spacecraft missions. But the knowledge that of Jupiter, constraining models of the deep interior. we are studying just the local example of what may be • Similarly, the masses of the Galilean satellites ubiquitous throughout the universe has changed our per- were corrected by up to 10%, establishing a decline in spective and studies of the jovian system have ramifica- their density with distance from Jupiter. tions that extend well beyond our solar system. • Magnetic field measurements confirmed the strong The purpose of this talk is to document our scientific magnetic field of Jupiter, putting tighter constraints on understanding of the jovian system after six spacecraft the higher order components.