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Across 1. Color galaxies appear as they move away from us 3. The second planet from the sun 8. The name of our galaxy cluster 9. The name of our galaxy 11. The hypothesis of solar system formation that says all of the planets and the sun all formed from the same disk 14. Rock from space that hits the ground 15. The layer of the sun that comes after the radiation zone and the photosphere 16. Streak of light in the sky 18. A "kink" in the sun's magnetic field 21. The inner planets 23. The reaction that produces heat in the sun 24. Formed when a planet failed to form 25. The outer planets 28. The planet that could float in water 29. Space rock outside of our atmosphere 30. The planet that is tilted at 97 degrees

Down 2. Where our solar system is located in our galaxy 4. What caused all of our craters to disappear? 5. How we see convection on the sun 6. The planets that have rings 7. Breaking an atom apart 10. Rapid expansion of the universe from a single point 12. When heat rises and cool sinks 13. Objects in space that are icy and have two tails as they approach the sun 16. The last inner planet 17. The hypothesis of solar system formation that says one star passed too closely to another star and material was ripped off to form the planet 19. Ejections of ionized gases that flow along magnetic lines 20. Type of galaxy that has no definite shape 22. Outer part of a galaxy where older stars are located 23. Bonding two atoms together under high pressure and heat 26. The layer of the sun where the energy is produced 27. Color galaxies appear as they approach us