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美国“好奇号”火星车着陆在火星伊奥利亚山脚的盖尔陨坑内已整整两个月了。由于距离火星赤道不远,美国宇航局的火星车享有特殊的气候条件:在充足的阳光下,巨大陨坑内的温度有时在零度以上。在喷气推进实验室工程师们非常谨慎的操作下,“好奇号”两个月只行进了500米,但它已有了一个很大的发现。事实上,美国行星学家在火星车每天传回的图像上发现了一个古老的河床!这可能是激湍的痕迹,抑或一条干谷,因为今天我们无从知道水是何时和怎样在整个太阳系从未见过的最古
It has been two months since the U.S. Curiosity rover landed inside the Gael crater at the foot of Mount Iolite in Mars. As it is not far from Mars’ equator, NASA rover enjoys special climatic conditions: In sufficient sunshine, the temperature in huge craters sometimes above zero. Under the very cautious operation of Jet Propulsion Laboratory engineers, Curiosity traveled only 500 meters in two months, but it has made a big discovery. In fact, the American planetary scientists found an ancient river bed on the images returned daily by rovers! It may be a sign of turmoil or a dry valley, because today we have no idea when and how water will move through the entire solar system Never seen the oldest