The Outer Planets Chapter 16 - 3 Ringed, Gas giants except Pluto No known solid surfaces Jupiter, Saturn, Uranus, and Neptune. Chapter 16 - 3

Jupiter 43.3 light minutes or 5 AU from the sun Temp. -153 degrees C Gravity: 236% of Earth’s 62 moons - Io, Europa, Ganymede and Callisto Revolution: almost 12yrs. Rotation: almost 10 hours Atmosphere: Water, methane, ammonia Great red spot - permanent storm 3 times the earth’s size

Saturn 1.3 light hours or 9.54 AU from the sun Temp. -185 degrees C Gravity: 107% of Earth’s 61 moons and most visible rings in the solar system – Titan is Saturn’s largest moon Revolution: 29 years 155 days Rotation: 10 hours 39 minutes

Uranus 2.7 light hours or 19 AU from the sun Temp. -214 degrees C Gravity: 91% of Earth’s 27 known moons - Miranda Revolution: 83 yrs 272 days Rotation: 17 hrs. 14 min. retrograde (clockwise) Tipped over on its side - axis of rotation is almost 98 degrees

Neptune 4.2 light hours from sun or 30 AU Temp. -225 degrees C 13 moons and 5 rings - Triton Revolution: 163 years, 263 days Rotation: 16 hrs. 7 min. The Blue World: -Has a Great Dark Spot -Clouds

Pluto In 2006 Pluto was reclassified as a dwarf planet. Different from outer planets - smaller than Earth’s moon and rocky 5.5 light hours or 39.5 AU (average) from sun Temp. -235 degrees C One moon - Charon is more than half Pluto’s size Revolution: 248 years Rotation : 6 days 10 hours retrograde Elliptical orbit brings Pluto closer to the sun than Neptune for a short period of time during its revolution

Mnenomic Device Eight planets, in order, from the sun outward Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune My Very Excellent Mother Just Served Us Noodles