Astronomy

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Across
  1. 4. Earth-centered solar system
  2. 7. This man theorized that the solar system was Sun-centered
  3. 8. The star at the center of our solar system
  4. 9. The planet we live on
  5. 11. The belief that Aristotle's ideas were superior to any other in science
  6. 15. The only natural satellite of the Earth
  7. 16. An inferior planet closest to the Earth
  8. 18. The sixth planet from the Sun and the second largest in our solar system
  9. 20. He built the first reflecting telescope
  10. 22. An instrument that aids in the observation of remote objects
  11. 23. A superior planet closest to the Sun
  12. 25. This man theorized that the solar system was Earth-centered
  13. 26. An astronomical object orbiting a star
Down
  1. 1. The visible streak of light from a meteoroid
  2. 2. Sun-centered solar system
  3. 3. This consists of the Sun and its planetary system
  4. 5. Minor planets that are not Comets
  5. 6. A dwarf planet that is not longer considered a planet
  6. 10. The word for the small world
  7. 12. The word for the large world
  8. 13. A flat, rotating disk containing stars, gas and dust, and a central concentration of stars
  9. 14. The eighth and farthest planet from the Sun
  10. 17. The seventh planet from the Sun
  11. 19. The largest planet in the solar system
  12. 21. He wrote the laws of planetary motion
  13. 24. A massive, gravitationally bound system consisting of stars, stellar remnants, an interstellar medium of gas and dust, and dark matter