Solar System

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Across
  1. 3. The act of force between 2 objects
  2. 8. Earth centered model
  3. 9. Made up of ice, rock, and cosmic dust
  4. 11. The path of an object as it revolves around another object in space
  5. 12. Beautiful rings
  6. 18. The study of moon, stars, and other objects in space
  7. 19. Meteoroid that has entered earth's atmosphere
  8. 20. Largest planet in the solar system
  9. 21. Rocky debris that revolves around the sun
Down
  1. 1. Any object that revolves around another object in space
  2. 2. The Red Planet
  3. 4. Space rock
  4. 5. Meteoroid that hit the earth's surface
  5. 6. A scientist that studies the universe beyond earth
  6. 7. Sun centered model
  7. 10. Changed to a dwarf planet in 2016
  8. 13. Has small dark spots and many moons
  9. 14. Hottest planet
  10. 15. Only planet with life
  11. 16. Orbits the sun on its side
  12. 17. Closest planet to the sun