What would you see if you could fly over Mars in a plane and look out the window?

想象一下，如果你坐飞机穿越火星上空，能从窗外看到些什么？

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You may think Mars is warm enough to live; however, the atmosphere is very thin with CO2 over 95%.

你可能认为火星足够温暖，可以生存；然而，火星的大气非常稀薄，二氧化碳含量超过95%。

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We can discover new planets around distant stars and find water on Mars, but over 95% of the workings of the brain remain unexplored and unexplained.

我们可以在遥远的星际发现新的行星，也能在火星上找到水。但95%以上的大脑运行方式还有待探索解释。

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In it,he developed a theory that intelligent life had created waterways all over the surface of Mars.

VOA: special.2010.07.11

This shows that the robots developed for Mars have won over a new generation of explorers.

VOA: special.2010.07.28

Meanwhile, there have also been concerns over Mars Polar Lander.

ECONOMIST: Double, double, Hubble trouble

Thirteen images were beamed back to Earth, and Dr. Nicholas Thomas of the Max Planck Institute in Germany said Deimos would never be more than a "spot" passing over Mars.

CNN: Mars' geology 'more like Earth than the moon'

" Nobel Laureate Steven Weinberg calls manned missions "an incredible waste of money" and argues that "for the cost of putting a few people on a very limited set of locations on Mars we could have dozens of unmanned, robotic missions roving all over Mars.

CNN: Mars can wait. Oceans can't