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Chapter 10


axis The imaginary line that Earth spins around as it rotates.
comet A ball of rock, ice, and frozen gas in space.
constellation A pattern of stars that form an imaginary picture or design in the sky.
galaxy A huge system of stars, gas, and dust.
moon Any natural body that revolves around a planet.
moon phases The different shapes that Earth's moon seems to have.
orbit The path Earth takes around the sun.
planet A large object that moves around a star.
solar system A group of objects in space that revolve around a central star.
star A huge ball of superheated gas.
sun The star at the center of our solar system.
universe Everything that exists in space.
Created by: patkinson