Sun, The center of the Solar System, Milky Way, Name of our galaxy, 4.5 bya, The Solar System formed, Terrestrial planets, Name of the inner planets, 70, What percent of Earth is water?, Mercury, Which planet looks like the moon?, East to west, Venus rotates , Water, May have once flowed on Mars , Olympus Mons , Largest volcano , Jupiter , Neptune and ________ contain storms on their surfaces .

Space

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