Across
- 3. energy moves by radiation
- 5. discovered elliptical orbits
- 6. visible layer of Sun
- 8. meteor reaching Earth
- 9. charged particles from Sun
- 10. glowing loop of gas
- 12. center of the Sun
- 14. outer Sun atmosphere layer
- 15. region between Mars and Jupiter
- 20. planet with famous rings
- 21. Sun at center model
- 25. shape of planet orbits
- 26. Earth's sister planet
- 27. fuzzy cloud around comet
- 29. rock traveling in space
- 30. largest planet
- 31. rocky object orbiting Sun
- 33. developed geocentric model
- 34. dark cooler spots on Sun
- 35. farthest major planet
Down
- 1. used telescope for evidence
- 2. proposed heliocentric model
- 4. energy moves by convection
- 7. only planet with liquid water
- 11. red planet
- 12. middle Sun atmosphere layer
- 13. outer planet with methane
- 16. collected planet observations
- 17. rocky inner planets
- 18. closest planet to Sun
- 19. Earth at center model
- 22. icy object with long orbit
- 23. shooting star
- 24. eruption of hot gas
- 28. process powering the Sun
- 32. large outer planets