Has rings, Has few moons, Has many moons, Has colder temperatures, Has warmer temperatures, Has a longer revolution, Has a shorter revolution, Made of gas, nicknamed "gas giants", Made of rock and metal, Thin atmosphere, Thick atmosphere, Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, Rotates on an axis, Revolves around a star, Relatively small in size, Relatively large in size, Has mass and volume, Surface is rock, Surface is gas.

Inner, Outer, or Both?

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