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Water amongst the rock

机译:岩石间的水

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摘要

The Moon isn't wet, but there is at least some water there. The latest and best evidence for water ice at the poles of the Moon comes from Feldman et al. in a paper in Science. These findings may or may not make lunar bases more feasible, but they do represent a success for a new type of exploration for the US space agency NASA. Although early astronomers called the vast, dark, circular patches of the Moon 'maria', thinking that they might be seas, water is scarce on the Moon. The amount of water in the samples returned by the Apollo astronauts is as low as 1 part per million, and most of that is probably contamination introduced during collection and processing. Some water should be brought to the Moon in asteroids and comets, and some should be created near the surface by the reduction of iron-bearing minerals by hydrogen in the solar wind. But these processes would put the water near to the lunar surface. With daytime temperatures approaching 400 K in the regions spacecraft have visited, that water has little chance of staying there.
机译:月亮不湿,但那里至少有一些水。关于月球两极水冰的最新和最佳证据来自Feldman等人。在《科学》杂志上发表这些发现可能使月球基地更可行,也可能使之不可行,但它们确实代表了美国航天局NASA进行新型探索的成功。尽管早期的天文学家称月球的广阔,黑暗,圆形为“玛丽亚”,以为它们可能是海洋,但月球上却缺乏水。阿波罗宇航员返回的样品中的水含量低至百万分之一,其中大部分可能是在收集和处理过程中引入的污染物。一些水应该以小行星和彗星的形式带入月球,一些水应该通过太阳风中的氢将含铁矿物质还原而在地表附近产生。但是这些过程会使水靠近月球表面。随着航天器造访区域的白天温度接近400 K,水几乎没有机会停留在那里。

著录项

  • 来源
    《Nature》 |1998年第6702期|p.549-550|共2页
  • 作者

    Timothy D. Swindle;

  • 作者单位
  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 自然科学总论;
  • 关键词

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