主要观点总结
本文介绍了天文学家在月球上发现洞穴的经过，这些洞穴可能成为未来宇航员居住的场所。文章提到了洞穴的存在证据、位置、特点以及潜在价值。
关键观点总结
关键观点1: 月球表面的恶劣环境
由于缺乏大气层，月球表面受到陨石袭击，宇宙辐射强烈，温度极端变化。
关键观点2: 月球洞穴的发现与证据
意大利特伦托大学的 Lorenzo Bruzzone 和 Leonardo Carrer 等人通过月球侦察轨道器（LRO）的数据在宁静海发现了一个巨大的洞穴。这个洞穴位于一个深达 135 米的坑底部，入口宽敞可进入。
关键观点3: 月球洞穴的潜在价值
月球洞穴具有稳定的温度和避免陨石冲击的特点，使其成为未来宇航员更吸引人的栖息地。此外，月球洞穴可能包含有价值的资源，如潜在的饮用水源，为研究月球的形成和火山活动提供线索。
关键观点4: 探索的意义
对月球洞穴的探索不仅有助于未来的太空居住，还可能揭示月球的起源和形成过程。
文章预览
Pied-à-lune Astronomers have found a cave on the moon Such structures could serve as habitats for future astronauts From an estate agent’s perspective, the lunar surface has little to recommend it. Its none-too-metaphorical lack of atmosphere means it is bombarded by meteorites, cosmic radiation is unrelentingly harsh and temperatures range from lows of -246°C to highs of 121°C. Subsurface lunar caves, on the other hand, with stable temperatures and cover from projectiles, would be much more enticing habitats. The only question is, do any exist? In a paper published in Nature Astronomy, Lorenzo Bruzzone and Leonardo Carrer, at the University of Trento, and their colleagues, offer a definitively affirmative answer. They provide evidence of a cave about 80 metres long and 45 metres wide at the bottom of a 135-metre-deep pit in the Sea of Tranquility. The neighbourhood is a historic one: plains which surround the pit are the site of humanity’s first lunar landing. Though the site
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