The asteroid belt (asteroid belt) located between the orbits of Mars and Jupiter is the remainder of the deposition is rocky planets and the interference of Jupiter and the noise from the sun, making them unable to provide measures. Big The outer planets (outer planet) is a planet that is next to the asteroid belt, Jupiter, Saturn, Uranus and Neptune, are composed mainly of hydrogen and helium, the so-called gas planets. Dong Comets Oort (Oort's comet cloud) is the area of the comet. Contain dust and debris, rocks, ice and frozen gases.
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