Jupiter:
11.2 D(earth)
-150 C Outer ammonia crystal cloud
80% H, 19% He, traces of water, methane, ammonia
Large magnetic field--over 10x Earth's
Differential rotation 9.8 hrs at equator
Features:
Great Red
Spot--cyclonic storm, lasting over 300 yrs.
Belts (darker
outward flow), and zones (lighter inward flow).
Liquid and
solid metallic hydrogen in core--p's & e-s--current
6% oblate
sphere.
A ring of dust
particles.
Large Van
Allen Belts.
Emits more
energy than it receives (true of all Jovian Planets).
Visiting Spacecraft:
1973-4
Pioneer 10, 11 flyby, 1979 Voyager I & II moons
1997--Galileo plunged into atmosphere--found less water
than
expected.
Satellites:
50 and counting