front 1 A small rocky body orbiting the sun | back 1 Asteroid |
front 2 The region of the solar systems between the orbits of mars and jupiter | back 2 Asteroid belt |
front 3 A mixture of gasses that suronds a planet or moon | back 3 Atmosphere |
front 4 A ball of frozen dust and rocks that orbits a planet | back 4 comet |
front 5 A large round pit caused by the impact of a meteoroid | back 5 crater |
front 6 A collection of stars dust and gas bound together by gravity | back 6 galaxy |
front 7 The outer planets | back 7 gas giants |
front 8 A force that pulls an object toward each other | back 8 gravity |
front 9 A celestial body moving in an elliptical | back 9 planets |
front 10 A natural object that orbits a planet | back 10 moon |
front 11 The galaxy containing the solar system | back 11 milky way |
front 12 The path an object follows as it moves around another object | back 12 orbit |
front 13 The movment of an object around anouther odject | back 13 revolution |
front 14 The spinning motion of a planet on its axis | back 14 rotainion |
front 15 The collection of eight planets and their moons in ordit around the sun | back 15 solar system |
front 16 A ball of hot gas primarily hydrogen and helium that undergoes nuclear fusion | back 16 star |
front 17 The name of the inner planets | back 17 terrestrial |
front 18 A celestial body resembling a small planet but lacking certain needs | back 18 dawrf planets |
front 19 The distance light travels in one year | back 19 light year |
front 20 A ball of frozen dust rock that orbits the sun and has a tail | back 20 kuiper belt |
front 21 A small body of matter from outer space that enters the earth atmosphere appearing as a streak of light | back 21 meteor |
front 22 All of space and everything in it | back 22 universe |