Solar System Vocabulary

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Across
  1. 5. Curve shaped flattened circle
  2. 7. Unit Unit equal to average distance between the earth and the sun
  3. 11. Relating to the movement of gravity
  4. 15. Path an object follows moving through space
  5. 18. axis Half the length of the shortest diameter
Down
  1. 1. Constant Constant connecting the gravitational force between two bodies
  2. 2. Point farthest from the sun
  3. 3. Measure of a curve
  4. 4. Imaginary line where a body rotates
  5. 6. axis Defines size of an ellipse
  6. 8. Movement of a celestial body around another
  7. 9. Surrounding the Earth or other planets
  8. 10. Point of orbit closest to the sun
  9. 12. Curved path of a celestial object
  10. 13. Duration of one complete cycle
  11. 14. An artificial body placed in orbit used to collect information
  12. 16. Circular movement of an object around central point
  13. 17. Point of light