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建立人际资源圈Mars
2013-11-13 来源: 类别: 更多范文
Mars
Mars
The planet Mars is nicknamed the god of war. The Planet probably got its name from its red color, Mars is sometimes called the red planet. Mars orbit is significant because it is elliptical. Mars average temperature is about -55C and at the winter poles it is almost about 27 C. There are four major land forms on Mars. Olympus Mons is the largest mountain in the solar system rising 24 km above the surrounding plain. Its plain is more than 500 km in diameter and is rimmed by a cliff 6 km high. Tharsis is a huge bulge on the Martian surface that is about 4000 km across and 10 km high. Valles Marineris is a system of canyons 4000 km long and from 2 to 7 km deep. Hellas Planita is an impact crater in the southern hemisphere over 6 km deep and 2000 km in diameter.
Most of the Martian surface is very old and scattered, but there are many other valleys, ridges, hills and plains. The most likely contrast of the sun is that its dense core is about 1700km in radius, a molten rocky mantle a little denser than the earths and a
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