front 1 Asteroid | back 1 A small rocky body orbiting the sun |
front 2 Asteroid belt | back 2 The region of solor system between the orbits of Mars and Jupiter |
front 3 Atmosphere | back 3 A mixture of gasses that surround a planet or moon |
front 4 Comet | back 4 A Ball of frozen dust and rock that orbits the sun and has a tail. |
front 5 Crater | back 5 A large round pit caused by the impact of a meteorite |
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 close to each other. |
front 9 Planets | back 9 A celestial body moving in an elliptical orbit around a star. |
front 10 moon | back 10 A natural objects that orbits the planets |
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 an 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 The collection of 8 planets and there moon orbit around the sun |
front 16 star | back 16 A ball of hot gas mainly hydrogen or helium |
front 17 Terrestrial | back 17 The name of the inner planets |
front 18 Dwarf planet | back 18 A celestial body resembling a small planet but lacking certain technical criteria. |
front 19 Light year | back 19 The distance light travels in a year |
front 20 Kuiper belt | back 20 A region of solar systems just beyond the orbit of Jupiter. |
front 21 Meteor | back 21 A small body of matter from outer space that entars the earths atmosphere appearing as a streak of light. |
front 22 Universe | back 22 All of space and everything in it |