OUR SOLAR SYSTEM

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Across
  1. 2. apartments backward movement of a planet
  2. 3. discover three major laws of planetary motion
  3. 5. provided number of scientific insight
  4. 7. proposed earth and other planets orbit the sun
  5. 9. the point of which the planet is furthest from the sun
  6. 11. a unit measurement equal to 149.6 million
  7. 12. three laws of motion
Down
  1. 1. the point of orbit being closest to the sun
  2. 4. objects ranging from one kilometer to hundreds of kilometers in diameter
  3. 6. deviation of a curve
  4. 8. oval shape that is centered on two points instead of a single point
  5. 10. one of two fixed points used to define an ellipse