1														2
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4		5
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		7		8							9
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11									12
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		15
					16

Across 5. The trapping of heat by the atmostphere is know as 11. This is a name for four inner planets that are small and have rocky surfaces 13. Center of a planet or the sun 14. These chunks of ice and dust whose orbits are usually very long, narrow ellipses are know as a 15. A chunk of rock or dust in space 16. Middle layer of the sun's atmosphere

Down 1. Outer layer around the sun 2. Life other than on Earth is called 3. Inner layer of the sun's atmosphere 4. A sun-centered system 6. large planets are called 7. The corona sends out a stream of electrically charged particals called 8. An Earth centered explanation 9. These are areas of gas on the sun that are cooler than the rest of the sun 10. A tendency of a moving object to continue in a straight line or a stationary object to remain in place 12. This is to small and to numerous to be considered full-fledged planets so it is called a