Scientist Puzzle

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Across
  1. 3. Noted for his laws of motion and gravity.
  2. 7. Revolutionized tools to measure observations of astronomy, first one to follow entire orbit.
  3. 9. Developed laws of planetary motion- planets move in ellipsis around the sun and their path may be calculated.
  4. 10. Mathmatical model based on observations of the location/motion of celestial bodies.
  5. 12. theory that sun is the center of the universe.
  6. 14. Brightness of stars were based on distance away which changed indicating motion.
Down
  1. 1. the curved path of a celestial object around the sun.
  2. 2. Earth was the center of this scientist's universe.
  3. 4. Discovered theory of general relativity.
  4. 5. the force that attracts a body towards the center of a physical body having mass.
  5. 6. Human computer cataloged stars, developed extended understanding of star cycles and size of the universe.
  6. 8. theory that earth is the center of the universe.
  7. 11. all existing matter and space existing as a whole.
  8. 13. Observed Venus and Jupiter and their moons, determined that the sun is the center of the universe.