1. 16-3 | The Outer Planets

2. The Outer Planets
The outer planets are called Jovian planets/gas giants because they have no known solid surfaces
Planets found after the asteroid belt

4. Jupiter Distance from the Sun = 43.3 light-minutes or 5 AU
Surface temperature = -153⁰C
Gravity = 236% of Earth’s
62 moons – Io, Europa, Ganymede, and Calisto

5. Jupiter Revolution = 12 years Rotation = almost 10 hours Atmosphere
Water, methane, ammonia
Great Red spot – permanent storm 3 times the Earth’s size
Generates more heat than it absorbs because of gases.

7. Saturn Distance from the Sun = 1.3 light-hours or 9.54 AU
Surface temperature = -185⁰C
Gravity = 107% of Earth’s

8. Saturn
61 moons and most visible rings in solar system – Titan is the largest moon
Revolution = 29 years and 155 days
Rotation = 10 hours and 39 minutes
“The most beautiful phenomenon in the universe”
More than 200,000 km in diameter, about 1 km in height
Shepherd moons keep rings together

10. 2.7 light-hours or 19 AU from the sun Temperature = -214 degrees C
Gravity: 89% of Earth’s
Uranus

11. Revolution = 17 years and 14 day, retrograde
27 known moons – Miranda
Revolution = 17 years and 14 day, retrograde
Tipped over on its side – axis of rotation almost 98 degrees
Causes crazy seasonal changes
Rings are skinny with gaps
Uranus

13. Distance from the Sun = 4.2 light-hours or 30 AU
Surface temperature = -225⁰C
13 moons and 5 rings – Triton is one of the moons
Narrow and bunched up rings
Due to the gravitational pull of the moons
Triton is a major moon with a retrograde motion (opposite of Neptune)
Might have been caught in its orbit
Will one day collide with Neptune
Neptune

14. Revolution = 163 years and 263 days Rotation = 16 hours and 7 minutes
The Blue World
Has a Great Dark Spot
Clouds
How can there be clouds?
It is still contracting, thus releasing energy
So much carbon and pressure that it actually might form diamonds…
DIAMOND RAIN!!
Neptune