Astronomy Review

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Across
  1. 3. Space rock revolving around the Sun that is too small to be considered a planet
  2. 6. Distance light travels in a single year
  3. 8. Collection of stars (Solar-Systems)
  4. 9. Average distance from the Sun to Earth (93 million miles)
  5. 10. Hottest planet in the Solar-System
  6. 11. Planet that rotates on it side (aka rolls around the Sun)
  7. 13. Very small "planets" without a clear orbital path around the Sun
  8. 14. Sun & Everything that revolves around it
  9. 15. Group of planets with solid rocky surfaces
Down
  1. 1. Causes planets to experience day & night
  2. 2. Man who developed the heliocentric model of the Solar-System in the 1500's
  3. 4. Causes planets to experience years
  4. 5. Oval path planets take as they revolve around the Sun
  5. 7. Model of the Solar-System that places the Sun at the center
  6. 12. Planet with the largest volcano in the Solar-System (Olympus Mons)