Kepler's Laws of Planetary Motion

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Across
  1. 2. As the distance from the sun increases, the length of the orbit increases is Kepler's ______ law
  2. 3. Kepler discovered that the planet's orbits were elliptical after observing the orbit of what planet?
  3. 6. Kepler's theories were further proof of what astronomical theory regarding the arrangement of the solar system?
  4. 8. Kepler's laws were important in Sir Isaac _______'s theories on gravity
  5. 10. Point in orbit where a planet is closest to the sun
Down
  1. 1. Point in orbit where a planet is farthest from the sun
  2. 4. Who proposed that the planets had a constant and consistent velocity and had that be the scientific consensus prior to Kepler's laws
  3. 5. As a planet’s orbit sweeps closer to the sun, the velocities of the orbit increases is Kepler's _____ law
  4. 7. What was the last name of the astronomer who Kepler was an assistant for?
  5. 9. All planets travel in an elliptical orbit is Kepler's _______ law