Astronomy

4. Earth-centered solar system
7. This man theorized that the solar system was Sun-centered
8. The star at the center of our solar system
9. The planet we live on
11. The belief that Aristotle's ideas were superior to any other in science
15. The only natural satellite of the Earth
16. An inferior planet closest to the Earth
18. The sixth planet from the Sun and the second largest in our solar system
20. He built the first reflecting telescope
22. An instrument that aids in the observation of remote objects
23. A superior planet closest to the Sun
25. This man theorized that the solar system was Earth-centered
26. An astronomical object orbiting a star

1. The visible streak of light from a meteoroid
2. Sun-centered solar system
3. This consists of the Sun and its planetary system
5. Minor planets that are not Comets
6. A dwarf planet that is not longer considered a planet
10. The word for the small world
12. The word for the large world
13. A flat, rotating disk containing stars, gas and dust, and a central concentration of stars
14. The eighth and farthest planet from the Sun
17. The seventh planet from the Sun
19. The largest planet in the solar system
21. He wrote the laws of planetary motion
24. A massive, gravitationally bound system consisting of stars, stellar remnants, an interstellar medium of gas and dust, and dark matter