Crossword Astronomy

Edit Answers
12345678910
Across
  1. 1. when the Earth is near from the Sun.
  2. 5. when the Earth is far from the Sun.
  3. 6. says that the Earth is at the center of the universe
  4. 8. are three specific laws describing the motion of planets around the Sun.
  5. 9. he formulated the three laws of planetary motion.
  6. 10. first to present an explicit argument for a heliocentric model.
Down
  1. 2. says that the planets revolve around the Sun.
  2. 3. who justified his Earth-centered model and explained retrograde motion through cycles and epicycles.
  3. 4. who proposed the geo-heliocentric universe model.
  4. 7. who first placed the spherical Earth at the center of the universe.