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There's a tiny bit of water on the surface of the moon.
月球表面水資源十分稀少。
The ultra-thin dusting of water molecules was first detected in 2009 from spacecraft measurements. So where did the H2O come from? A chemical analysis of lunar samples now points to a likely culprit: the solar wind, a stream of charged particles emanating from the sun.
2009年航天器首次探測到了超薄除塵的水分子。然而這些水分子從何而來？目前一項(xiàng)對月巖樣本的化學(xué)分析指出了可能的來源——太陽風(fēng)，即太陽表面放射的離子組成的帶電離子流。
Researchers looked at agglutinates, a type of glassy lunar material brought back by Apollo astronauts. Agglutinates formed when micrometeorites hit the lunar surface and melted a bit of the powdery regolith. Tiny intact grains of soil were preserved within, like insects in amber.
研究人員觀察到了凝集物，一種阿波羅宇航員從月球上帶回來的透明物質(zhì)。當(dāng)微小的隕石撞擊月球表面時(shí)，少許粉狀浮土?xí)诨纬蛇@種凝集物，把微小完整的土壤粒包裹在里面，就像昆蟲琥珀一樣。
Those agglutinates turn out to contain hydroxyl, or OH, a precursor molecule to water. And the OH's isotopic signature indicates that much of the hydrogen came from the solar wind. Add solar wind hydrogen to moon material that contains oxygen and, voila, water. The research is in the journal Nature Geoscience.
事實(shí)證明這些凝集物含有羥基，即 OH，具有親水性。OH 的同位素追蹤顯示大多數(shù)的氫來自于太陽風(fēng)。月球中的氧與來自太陽風(fēng)的氫結(jié)合，瞧，水不就形成了。這項(xiàng)研究發(fā)表在《自然地球科學(xué)》期刊上。
The researchers note that similar chemistry could be at work on Mercury, large asteroids and other airless bodies that endure the full blast of the solar wind. Meaning that even as the sun bakes those worlds, it delivers a bit of hydration.
研究人員指出類似的化學(xué)反應(yīng)在水星、大型行星以及其他空氣稀薄并能承受太陽風(fēng)猛烈沖擊的星體上也有發(fā)生。這意味著太陽在烘烤萬物的同時(shí)，也會(huì)分泌少許的水分。
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