Mars (Mars) is a planet from the sun is ranked 4 among all planets. Mars has a diameter of about 0.5 as much of the world. Mars has internal structure consists of a solid core radius, about 1 700 kilometers. Covered with a thick mantle magma, about 1 600 kilometers. And has a hard shell, as well as the world. Mars is red because the surface of iron oxide (rust) the surface of Mars is full of ravines, many large ravines, name. The abyss, Mari products (Valles Marineris) with the length of 4 000 kilometers wide, 600 kilometers deep 8 kilometers. Also, Mars is the highest volcano in the solar system named the volcano Olympus (Mount Olympus) high 25 kilometers, the base that unfolds a radius 300 kilometers.
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