It's probably nothing but an optical illusion remember the Face on Mars?
也许他什么也不是，只是一种错觉还记得火星上的神秘人脸吗？
Humorously, this brain-terrain on Mars spans about a kilometer, making it just about the right size to fit inside the rock formation once dubbed the Face on Mars.
相当有趣的是，这个脑状火星地貌的大小约有一公里，大小很适合放在暱称为火星之脸的岩石堆里。
In one photo, a hill on Mars' surface looked a little like a face.
在一张照片中，火星表面的一座山看上去有点像一张脸。
In the meantime, check out this other bit of NASA promo hilarity: Space Your Face, where an animated astronaut with whatever picture you want in its helmet boogies on the moon or Mars.
与此同时，请关注NASA的另一项推广活动：“太空飞脸”，在这个活动中，一个飞往月球或火星的动画版宇航员将在他的头盔上画上任何你所想要的图画。
Now let's leap ahead, and much farther afield. What kinds of issues might a crew of astronauts face on a longer journey-say, a round-trip to Mars?
现在让我们跳跃前进，更进一步地研究这个话题：宇航员在长期的太空旅行，换句话说，环游火星时可能要面临的问题？
The goal is to gain experience about the psychological challenges that a crew will face on a trip to Mars.
这项实验的目的是在船员将在到火星的旅程中面临的心理挑战上获得经验。
The goal is to gain experience about the psychological challenges that a crew will face on a trip to Mars.
这项实验的目的是在船员将在到火星的旅程中面临的心理挑战上获得经验。
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