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Science Ch. 17

Vocab. for science chapter

solar system The sun, its eight planets, dwarf planets, moons, asteroids, and comets.
revolution a full orbit around another object
axis an imaginary center line
rotation one whole spin of an object
space probe spacecraft that gather data without a crew
comet a frozen mass of different tyes of ice and dust orbiting the sun
asteroid a rocky mass up to several hundred kilometers wide that revolves around the sun
satellite a moon, rock, or anything that orbits another object
moon phases the shapes of the lit side of the moon we can see
Created by: vwermert