which is the big star in the solar system, sun, vinus, mars, which is the coldest planet in the solar system, neptune, murcury, uranus, which is the smalest planet, murcury, earth, moon, which is the hottest planet in the solar system, venus, murcury, neptune, which planet has rings, saturn, earth, mars, which planet is upside down, murcury, venus, mars

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