1. Jupiter Fifth planet from the Sun Known since ancient times
Sidereal Period: years
Sidereal Day: 0.41 days
Average Surface Temperature: 124 K (-236 F)
16 (67?) Moons

2. Jupiter 11.21 x the radius of Earth 0.24 x the density of Earth
Dense, hot rocky core
Hydrogen in all phases
At high temperatures, hydrogen acts like a metal
Core the size of Earth

3. Jupiter’s Moons Ganymede: Largest moon in the Solar System Europa:
The Galilean Satellites
Ganymede:
Largest moon
in the
Solar System
Europa:
Cracked, Icy Surface
May have a liquid ocean
Io:
Active Volcanos
Covered w/ sulfur
Callisto:
Rocky Surface
May have a liquid ocean

4. Saturn Sixth planet from the Sun Known since ancient times
Sidereal Period: years
Sidereal Day: 0.44 days
Average Surface Temperature: 97 K (-285 F)
18 Moons

5. Saturn 9.45 x the radius of Earth 0.125 x the density of Earth
Rocky core
Liquid Metallic Hydrogen
Liquid Hydrogen
Molecular Hydrogen

6. Saturn’s Moons

7. Jupiter vs. Saturn