The Outer Planets - PowerPoint by cKByps

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									The Outer Planets
Presentation for The Planets (51.106)
Jupiter
                              Jupiter
   Properties
    –   Rotation period ~10 hours
    –   “Year” of ~12 years
    –   Diameter 143,000 km (11 Earths)
    –   Composed mainly of H and He
    –   Atmospheric colors are due to trace gases in clouds (ammonia,
        hydrogen sulfide, etc.)
    –   Has a rocky core ~10-15 Earth’s in size
    –   Many “storms”, most noticeably the Great Red Spot
    –   Has a large, powerful magnetic field
    –   Small and thin ring system
    –   Dozens of moons. Four large ones: Io, Europa, Ganymede, Callisto
   Visited by:
    – Pioneer 10 and 11
    – Voyager 1 and 2
    – Galileo (1990’s)
Great Red Spot
Thin Rings
Shoemaker-Levy 9 Impact
                       Saturn
Properties
–   Rotation period ~11 hours
–   “Year” of ~29 years
–   Diameter 120,000 km (9 Earths)
–   Composed mainly of H and He
–   Atmospheric colors are due to trace gases in clouds (ammonia,
    hydrogen sulfide, etc.)
–   Has a rocky core ~10 Earth’s in size
–   Smaller scale storms compared with Jupiter
–   Has a powerful magnetic field
–   Spectacular ring system
–   Dozens of moons (other than rings). One large one – Titan.
Visited by:
– Pioneer 11
– Voyager 1 and 2
– Cassini (2004-)
Shepherd Moons
Uranus
                           Uranus
   Properties
    –   Rotation period ~17 hours (retrograde)
    –   “Year” of ~84 years
    –   Diameter ~52,000 km (4 Earth’s)
    –   Discovered in 1781 by W. Herschel
    –   Composed mainly of H and He
    –   Atmospheric color due increase in methane gas (green tint)
    –   Has a rocky core ~1 Earth in diameter
    –   Has a magnetic field
    –   Tilted on it’s side
    –   Thin ring system
    –   27+ moons named for characters in Shakespeare and Pope
   Visited by:
    – Voyager 2 (1986)
Neptune
                           Neptune
 Properties
   –   Rotation period ~16 hours
   –   “Year” of ~164 years
   –   Diameter ~50,000 km (4 Earth’s)
   –   Discovered in 1846 by Adams and Leverrier
   –   Composed mainly of H and He
   –   Atmospheric color due increase in methane gas (blue tint)
   –   Has a rocky core ~1 Earth in diameter
   –   Has a magnetic field
   –   Thin ring system
   –   13+ moons named for sea nymphs; largest moon Triton
 Visited by:
   – Voyager 2 (1989)

								
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