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Prograde rotation The COUNTERCLOCKWISE SPIN of a planet or moon as seen from above the planet's north pole Retograde rotation The CLOCKWISE SPIN of a planet or moon as seen from above the planet's north pole Gas giant A LARGE, GASEOUS PLANET of the outer solar system with no known solide surface Satellite A natural or artificial BODY THAT REVOLVES AROUND A MORE MASSIVE BODY Comet A SMALL body of ICE, ROCK, and cosmic dust LOOSELY PACKED TOGETHER Asteroid belt The REGION of the solar system that most ASTEROIDS OCCUPY BETWEEN the orbits of MARS and JUPITER Asteroid A SMALL ROCKY BODY that REVOLVES AROUND THE SUN Meteroid A VERY SMALL ROCKY BODY that REVOLVES AROUND THE SUN Meteorite A METEOROID that REACHES the EARTH'S surface WITHOUT BURNING up completely Meteor A STREAK OF LIGHT caused when a meteoroid or comet dust burns up in the Earth's atmosphere