Sun, Earth, Moon Crossword

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Across
  1. 1. The force that keeps the Earth in orbit.
  2. 4. Happens in Summer and Winter.
  3. 5. Thought that the Earth was the center of the universe.
  4. 6. The moon orbits this planet.
  5. 8. We complete one every 365.24 days.
  6. 10. The object that orbits the Earth.
Down
  1. 2. Spinning motion.
  2. 3. Thought that the Sun was off to the side.
  3. 7. Study of the universe.
  4. 9. Happens in Spring and Autumn.