1					2
								3		4
				5
		6
										7
				8				9
								10
11
												12		13
																	14
15
																16
							17
18																	19

Across 1. An elongated, closed curve; the shape of the Earth's orbit 3. A natural or artificial body that revolves around a planet. 5. The combination of the nuclei of small atoms to form a larger nucleus; how the sun makes energy. 7. The two times each year that the sun is directly above Earth's equator and the day and night are of equal length all over the world; the start of spring and fall 10. The spinning of an object around its axis; causes day and night to occur on Earth. 15. Clockwise spin of a planet or moon as seen from above the planet's North Pole. 16. The force that keeps the planets in motion. 17. The point where the Earth is closest or farthest away from the sun. 18. The curved path followed by a planet as it goes around the sun. 19. A natural satellite of a planet.

Down 2. When two bodies move around each other at the same rate, example the moon and Earth. 4. Teh four solid, rocky planets closest to the sun - Mercury, Venus, Earth and Mars. 6. The four planets farthest from the sun - Jupiter, Saturn, Uranus and Neptune 8. The average distance from Earth to the sun 9. Counterclockwise spin of a planet or moon as seen from above the planet's North Pole; rotation in the same direction as the sun's rotation. 11. An event where the shadow of the Earth falls on the moon. 12. The orbiting of one object around another, like Earth's yearly orbit around the sun. 13. An event in which the shadow of the moon falls on the Earth's surface. 14. The system of 9 planets and many other objects that orbit our sun.