Keplers law-Crumpler-parkman

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Across
  1. 3. The standard unit of time used in Kepler's third law
  2. 6. Kepler's second law is also known as the law of blank areas
  3. 7. The first name of Brahe whose precise data Kepler used to build his laws
  4. 10. The star at the center of our solar system that planets orbit
  5. 11. The A in AU the unit of distance used in Kepler's third law
  6. 14. The point in a planet's orbit where it is closest to the Sun
  7. 15. One of the two points used to define an ellipse where the Sun sits
Down
  1. 1. The German astronomer who formulated the three laws of planetary motion
  2. 2. The curved path of a celestial object around a star or planet
  3. 4. The shape of a planet's orbit around the Sun
  4. 5. The point in a planet's orbit where it is farthest from the Sun
  5. 8. The radius along the longest axis of an ellipse
  6. 9. The invisible force that Isaac Newton used to explain why Kepler's laws work
  7. 12. Kepler's second law states that a planet moves at varying blanks in its orbit
  8. 13. The time it takes for a planet to complete one full orbit around the Sun