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Across 1. brief streak of light seen when an asteroid enters the earth's atmosphere and burns up 3. largest planet 4. planet that rotates in the opposite direction from the others 5. earth has this and no other planet does 7. this planet is greenish blue, has a great dark spot 9. the sun is one of these 11. imaginary line on which a planet spins around 13. the larger planets are mostly made of this 17. made of ice, rock, frozen gases and dust 19. solid rocky planets 21. number of moons earth has 22. planets, moon, stars and sun 27. this is between Mars and Jupiter 28. this planet rotates on its side 30. instrument used to see objects in space 31. path of an object around another object 32. it takes this many minutes for the suns light to reach the earth

Down 2. warming of the atmosphere because of trapped heat energy from the sun 6. our solar system in located in this galaxy 8. planet that has the closest day to ours 10. the solar system is held together by this 12. dark areas on the sun 14. how thick or heavy something is relative to its size 15. gases surrounding a planet 16. spinning windstorm on Jupiter 18. closest planet to the sun 20. rocky object smaller than a planet that orbits a star 23. planet with a big ring system 24. a meteorite can cause this wherever it lands 25. source of light for all objects in space 26. now not considered a planet 29. largest object in the solar system