Jupiter Fifth planet from the Sun Known since ancient times Sidereal Period: 11.86 years Sidereal Day: 0.41 days Average Surface Temperature: 124 K (-236 F) 16 (67?) Moons
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
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
Saturn Sixth planet from the Sun Known since ancient times Sidereal Period: 29.42 years Sidereal Day: 0.44 days Average Surface Temperature: 97 K (-285 F) 18 Moons
Saturn 9.45 x the radius of Earth 0.125 x the density of Earth Rocky core Liquid Metallic Hydrogen Liquid Hydrogen Molecular Hydrogen
Saturn’s Moons
Jupiter vs. Saturn