1. The Solar System Sol and All

2. I. The Sun A. Sol 1. Type: yellow dwarf 2. Diameter: 1,393,000 kilometers 3. Mass: 2 x 1030 kg (333,060 Earths) 4. Surface Temperature: 55000 C B. Located on outer arm of the Milky Way galaxy

4. II. The Inner Planets A. Mercury: 1. Distance from Sol = 58,000,000 km (0.39 AU) 2. Little if any atmosphere 3. Surface Temp. = -173 – 427 0 C 4. Tidally locked 5. no moons 6. 1 day = 6 months 7. 1 year = 3 months

5. B. Venus 1. Distance from Sol = 108,000,000 km (0.73 AU) 2. very thick poisonous atmosphere 3. Surface Temp. = 462 0 C 4. no moons 5. 1 day = 8 months 6. 1 year = 7 ½ months

6. C. Earth 1. Distance from Sol = 150,000,000 km (1 AU) 2. temperate atmosphere 3. Surface Temp. = -88 – 58 0 C 3. one moon 4. 1 day = 24 hours 5. 1 year = 12 months

7. D. Mars 1. Distance from Sol = 228,000,000 km (1.38 AU) 2. thin atmosphere, mainly CO 2 3. Surface Temp. = -87 - -5 0 C 4. 2 moons, Phobos & Deimos 5. 1 day = 24 ½ hours 6. 1 year = 22 ½ months

9. III. The Outer Planets A. Jupiter 1. Distance from Sol = 778,000,000 km (5.2 AU) 2. Gas giant (mainly H & He) 3. 63 moons (at last count) 4. 1 day = 9.8 hours 5. 1 year = 11.9 years

10. B. Saturn 1. Distance from Sol = 1,430,000,000 km (9.5 AU) 2. Gas giant (mainly H, He, methane & ammonia) 3. 62 moons (at last count) 4. 1 day = 10.5 hours 5. 1 year = 29.5 years

11. C. Uranus 1. pause for giggles 2. Distance from Sol = 2,900,000,000 km (19.2 AU) 3. Gas giant (mainly H, He & methane) with rocky core 4. 27 moons (at last count) 5. 1 day = 18 hours 6. 1 year = 84 years

12. D. Neptune 1. Distance from Sol = 4,500,000,000 km (30 AU) 2. Gas giant (mainly H, He & methane) with rocky core 3. 14 moons (at last count) 4. 1 day = 19 hours 5. 1 year = 165 years