The inner edge of the Kuiper Belt begins at the orbit of Neptune, at about 30 AU from the Sun. (1 AU, or astronomical unit, is the distance from Earth to the Sun.) The inner, main region of the Kuiper Belt ends around 50 AU from the Sun
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The Kuiper Belt is a disk-shaped region situated in the outer Solar System, which is past Neptune's orbit. Its inner edge starts from Neptune's orbit (30 AU from the Sun), and the outer edge goes to nearly 1.000 AU. Neptune is the farthest planet from the Sun
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