The Outer Planets Ringed Gas giants except Pluto

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

• 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 12 yrs. • Rotation: almost 10 hours • Atmosphere: – Water, methane, ammonia – Great red spot - permanent storm 3 times the earth’s size Jupiter

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