front 1 asteriod | back 1 a small rocky body orbiting the sun |
front 2 asteriod belt | back 2 a region of the solar system between mars and jupiter |
front 3 atmosphere | back 3 a mixture of gasses that surrounds a planet |
front 4 comet | back 4 a ball of frozen dust and rock that has a tail |
front 5 crater | back 5 a large round pit caused by an impact of a meteoroid |
front 6 galaxy | back 6 a collection of stars, dust, and gas bound together by gravity |
front 7 gas giant | back 7 the outer planets |
front 8 gravity | back 8 a force that pulls objects towards eachother |
front 9 planets | back 9 a celestial body orbiting the sun |
front 10 moon | back 10 a natural object that orbits a planet |
front 11 milky way | back 11 the galaxy containing the solar system |
front 12 orbit | back 12 the path an object follows as it moves around another object |
front 13 revolution | back 13 the movement of an object around another object |
front 14 rotation | back 14 the spinning motion of a planet on its axis |
front 15 solar system | back 15 a collection of eight planets and their moons in orbit around the sun |