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Can humans emigrate from the earth to Mars?
The desolate world of Mars
The equatorial radius of Mars is 3332km, which is only half that of radius of the earth. Its volume is only 1/7 and its mass is 1/9. The acceleration of surface gravity is 2/5 of that of the earth. On Mars, objects thrown at a speed of 5 kilometers per second can leave Mars. Due to the slow separation speed of objects on Mars, it is difficult for Mars to bind many atmospheric molecules, so the Martian atmosphere is very thin. The main component of the Martian atmosphere is carbon dioxide, accounting for about 95%, and the rest are nitrogen, argon, carbon monoxide, oxygen, ozone and hydrogen. The amount of water vapor is very small, accounting for about 0.0 1% of the total atmospheric volume on average. The atmospheric pressure on the ground is 7.5 hectopascals, which is equivalent to the atmospheric pressure at a height of 30 ~ 40 kilometers on the earth.
The solar radiation on Mars is only 40% of that on Earth, so the surface temperature of Mars is lower than that on Earth by more than 30℃, and the temperature difference between day and night exceeds 100℃. Near the equator of Mars, the temperature only rises to about 20℃ at noon and drops below -50℃ at night. The temperature in the polar regions is only -70℃ in summer, and it can drop to-139℃ in winter. After the invention of the telescope, in the17th century, Huygens, a Dutch scholar, discovered that both the north and south poles of Mars have white polar caps, the size of which varies with the seasons. In winter in the northern hemisphere, the arctic crown increases; At this time, the southern hemisphere is in summer, and the Antarctic crown is decreasing. When summer comes in the northern hemisphere, the area of the Arctic crown will also shrink, just as the ice and snow on the earth melt in summer. In the atmosphere of Mars, there are often sandstorms shaped like Huang Yun. Local sandstorms often occur, and large sandstorms can be observed with telescopes on the earth; Extremely large sandstorms (such as those in 197 1) can cover the entire Martian world and last for several months. Sandstorms are composed of strong winds with dust particles in the lower atmosphere of Mars. It is estimated that each dust storm covers the southern hemisphere of Mars as much as 10 ~ 10 tons.
Even if you can go, it may be like 20 12, and those with money can do it.
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