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What keeps us from floating away? Earth’s gravity! This invisible force keeps our feet on the ground and the moon in our sky. This title introduces young students to the awesome power of gravity, on our planet and in the black holes in galaxies far away.
What keeps us from floating away? Earth’s gravity! This invisible force keeps our feet on the ground and the moon in our sky. This title introduces young students to the awesome power of gravity, on our planet and in the black holes in galaxies far away.