Kepler's laws

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Across
  1. 5. the force that attracts objects toward
  2. 7. the time it takes for a planet to one orbit
  3. 8. the star at the center of our solar system
  4. 9. one of two special points
  5. 10. how stretched out and orbit is
Down
  1. 1. a large object that orbits a star
  2. 2. the study of space and celestial objects
  3. 3. one complete trip around the sun
  4. 4. an oval shaped path
  5. 6. the path a planet follows around the sun