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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?
在冷凍中,“信使”號將遇到另一個難題:如此接近太陽的行星,冰存在嗎?
It's only when the first radar observations to the surface of Mercury were obtained, back in the 90s.
早在90年代，只有第一個觀測水星表面的雷達知曉。
That was discovered that Mercury in fact,had what appeared to be polar caps in these first radar images.
而事實上在水星上的發現,似乎是在雷達圖像上有類似的冰帽。
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.
水星極地隕石坑永久的陰影中的一些角落里。在這里,就像地球上的所有太陽炙烤下一樣,水似乎凍結存活在永恒的黑暗中。
The ice is contained in places where literally the sun never shines,
冰也包含在太陽絕對不會照射到的地方,
and so the ice sequestered in these dark,
因此這些冰在黑暗中被束縛，
interiors of craters of high latitude regions.
在這些高緯度地區的隕石坑內部。
We found the same thing on our moon.
我們在月球上也發現過同樣的東西。
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任務探測到了隕石深坑附近的陰影確認冰隱藏在月球的南極。
Where did it come from? A comet?
它從何而來?來自彗星嗎?
注：聽力文本來源于普特
