Galaxy, Huge system of stars and gas, Star, Hot glowing ball of plasma, Planet, Large body orbiting a star, Moon, Natural satellite orbiting a planet, Asteroid, Rocky body smaller than a planet, Comet, Icy object with a tail near Sun, Orbit, Path an object follows in space, Gravity, Force pulling masses toward each other, Light-year, Distance light travels in one year, Black hole, Region where not even light escapes.

Space

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