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THE PLANETS Distance = distance from sun compared to Earth Mass = mass of the planet compared to the mass of the Earth Diameter = distance from one side of the planet to the other through the centre of the planet. Rocky/Gas = what the planet is made of Mercury Distance = 0.4 Mass = 0.05 Diameter = 5,000 km Rocky Fastest orbit. Thin, unstable atmosphere Venus Distance = 0.7 Mass = 0.8 Diameter = 12,000 km Rocky Sulphuric acid rain. Carbon dioxide clouds. Earth Distance = 1.0 Mass = 1.0 Diameter = 13,000 km Rocky Has oceans of water which support life. Mars Jupiter Saturn Distance = 1.5 Mass = 0.1 Diameter = 7,000 km Rocky Frozen carbon dioxide at poles. Red, cold. Distance = 5 Mass = 320 Diameter = 140,000 km Gas Mainly hydrogen and Helium. Giant red spot Distance = 10 Mass = 95 Diameter = 120,000 km Gas Rings of ice and rock. At least 62 moons. Uranus Neptune Pluto Distance = 30 Mass = 17 Diameter = 50,000 km Gas Named after god of sea. Blue. Distance = 40 Mass = 0.002 Diameter = 2,000 km Rock Smaller than our moon. No longer a planet. Distance = 20 Mass = 15 Diameter = 51,000 km Gas Water, ammonia and methane ices.