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And here in a freezer that MESSENGER will encounter another puzzle: can ice exist on a planet so close to the sun?
在冷冻中,“信使”号将遇到另一个难题:如此接近太阳的行星,冰存在吗?
It's only when the first radar observations to the surface of Mercury were obtained, back in the 90s.
早在90年代，只有第一个观测水星表面的雷达知晓。
That was discovered that Mercury in fact,had what appeared to be polar caps in these first radar images.
而事实上在水星上的发现,似乎是在雷达图像上有类似的冰帽。
Some corners of Mercury polar craters are in permanent shadow.Here, on the most sunbaked planet of all, water seems to survive frozen in the eternal darkness.
水星极地陨石坑永久的阴影中的一些角落里。在这里,就像地球上的所有太阳炙烤下一样,水似乎冻结存活在永恒的黑暗中。
The ice is contained in places where literally the sun never shines,
冰也包含在太阳绝对不会照射到的地方,
and so the ice sequestered in these dark,
因此这些冰在黑暗中被束缚，
interiors of craters of high latitude regions.
在这些高纬度地区的陨石坑内部。
We found the same thing on our moon.
我们在月球上也发现过同样的东西。
In late 2009,the LCROSS mission crashed a probe into a deeply shadowed crater confirming ice hidden near the lunar South pole.
在2009年末,LCROSS任务探测到了陨石深坑附近的阴影确认冰隐藏在月球的南极。
Where did it come from? A comet?
它从何而来?来自彗星吗?
注：听力文本来源于普特
