Astronomy Review

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