Orbital Forces 2.3

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Across
  1. 3. physical universe beyond the earth's atmosphere envelope of gases surrounding the earth
  2. 8. region of the solar system beyond Neptune
  3. 9. action of rotating around axis/center
  4. 11. place where someone or something is located
  5. 13. the dense central region of a planet
  6. 14. line passing from side to side through a body
  7. 16. group of celestial objects connected by force
  8. 18. supposition/system of ideas to explain
  9. 19. Small rocky body orbiting the sun
  10. 20. the star around which the earth orbits
Down
  1. 1. celestial object consisting of ice and dust
  2. 2. distance of a place north/south of the equator
  3. 4. move or cause in a circle around an axis
  4. 5. fixed luminous point in the night sky,is large
  5. 6. the planet on which we live; the world
  6. 7. a natural satellite of any planet
  7. 10. one complete circuit around an orbited body
  8. 12. outside part or uppermost layer of something
  9. 15. a single orbit of one object around another
  10. 17. force that attracts a body toward the center
  11. 19. Imaginary line about which a body rotates