Across
- 1. it would take 100,000 years to move through this region of the sun
- 4. outer layer of the sun's interior
- 5. Mars is red because of this
- 8. named most of the planets
- 10. gas that makes up most of Venus's atmosphere
- 13. planet that is similar in size and density to Earth
- 17. the process that produces the sun's energy
- 19. the sun's surface layer
- 21. will always be a planet in our hearts
- 22. developed the heliocentric model
- 23. makes up most of the sun
- 25. model that states Earth is the center of solar system
- 26. only planet with confirmed water on its surface
- 28. planet with the greatest temperature range
- 29. what planet translates to in Greek
- 30. layer of sun's atmosphere that produces a reddish glow
- 32. largest volcano in the solar system
Down
- 2. makes up most of Earth's atmosphere
- 3. first to study the solar system
- 6. reddish loops of gas that like sunspots together
- 7. outermost layer of the sun's atmosphere
- 9. areas of gas on the sun's surface that are cooler
- 11. more accurately predicted positions of planets
- 12. used the phases of Venus and moons of Jupiter to support the heliocentric model
- 14. has seasons like Earth
- 15. said planets moved on small circles that move on bigger circles
- 16. model that states the sun is the center of the solar system
- 18. occur when loops of sunspot regions connect and release energy
- 20. acid that makes up clouds on Venus
- 24. said planets orbit in an elliptical pattern
- 27. name of the effect that results from the atmosphere trapping heat
- 31. where fusion takes place