1						2
				3
	4
			5												6			7
														8
	9
			10							11		12
	13							14
15															16
17														18
						19
					20

Across 3. A new category of celestial body created by the International Astronomers Union in 2006. 4. Large planets made mostly of gasses, Jupiter, Saturn, Uranus, and Neptune 5. Are Jupiter, Saturn, uranus, and Neptune 8. Dwarf planet covered by frozen nitrogen 9. Dense, Small, and rocky like Earth, Mercury, Venus, and Mars 14. An object that revolves around a star and has enough mass that gravity forces it to assume a spherical shape 15. A reusable vehicle that takes off like a rocket and lands like an airplane 16. Is the dominant member at the center of the Solar System we live in 17. A mass of gas in space that generates energy by the sun 18. This planet rotates in the opposite direction than Earth. 19. A small rocky, body that revolves around the Sun 20. All materr that exists

Down 1. The four largest moons of Jupiter; Io, Europa, Ganymede, and Callisto, discovered by Galileo in 1610. 2. The second largest planet in the Solar System 6. A star and all object cought in its gravity, that together form a system 7. A natural satellite of a planet 10. Is the closest planet to the Sun. 11. The only planet known to support life 12. Is a metereoid that has hit the ground 13. Called giant of giants; made mostly hydrogen and helium