History of the solar system

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Across
  1. 6. predicted planet movement and eclipses with experiments and data
  2. 7. the second planet in our universe-one of the planets discovered by the Greeks
  3. 11. sun centered universe
  4. 12. his ideas were based on his thinking not experiments
  5. 13. maintain heliopcentric view but refused to publish work until he was on his deathbed
  6. 15. developed a heliocentric model with the us of Tycho math
Down
  1. 1. earth centered universe
  2. 2. the red planet-one of the planets discovered by the Greeks
  3. 3. was placed on house arrest because of his view of a heliocentric universe
  4. 4. the largest planet that was already known by the Greeks and Romans
  5. 5. planet close to the sun-one of the planets discovered by the Greeks
  6. 8. had the most accurate astronomical measurements in history
  7. 9. developed the ideas needed to explain the physics of our universe
  8. 10. the number of planets that was already know by the Greeks and Romans without telescopes
  9. 14. planet with the rings-one of the planets