1. The Outer Planets

2. Most of the Outer planets are: Large, Gas Giants except Pluto
The Gas Giants…..and the Inner planets

3. Jupiter Largest Planet Atmosphere: Hydrogen and Helium
16 Moons – (4 Large Moons)
(Ganymede, Europa, Callisto, Io )
Great Red Spot (Huge Storm)
Space Probes: Voyager-Galileo
Thin ring system
Day: 10 hrs
Year: 12 Years

4. Jupiter

5. Saturn 2nd Largest Planet Large ring system-ice, rock, dust
About 18 Moons (18-21)
Space Probe: Voyager-Cassini
Atmosphere: Hydrogen, Helium
Titan: Moon with an Atmosphere
Day: 10 hours
Year: years

6. Saturn

7. Uranus About the size of Neptune Discovered by William Herschel 1781
Atmosphere: hydrogen, helium
methane
About 15 Moons
Thin ring system
Rotates on its side
Rocky core
Voyager space probe
Day: 18 hours
Year: 84 years

8. Uranus

9. Neptune A little smaller than Uranus Methane atmosphere
Last planet seen by Voyager
Rocky core
8 Moons (Triton)
Thin ring system
Great dark spot
Day: 19 hours
Year: 165 years

10. Neptune

11. Pluto “Dwarf” Planet Icy/rocky Planetoid
1 Moon-Charon (“double planet”)
Thin atmosphere-frozen gases
Space probe: New Horizon 2015
Pluto is one of many “Planetoids”
Day: About 6 Earth days
Year: 248 Earth Years (tilted orbit)

12. Pluto