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    <title>太空进入 on Deep Research</title>
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      <title>十万公里的太空梦想为何经久不衰：挑战物理极限的材料革命有望实现太空电梯</title>
      <link>https://dailydigest.aabot.us/zh/posts/2026-04-29-carbon-nanotube-space-elevators-100000-km-tethers-and-the-materials-science-race-to-low-cost-space-access/</link>
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      <description>一根10万公里长的碳纳米管缆绳——相当于地月距离的25%，强度足以支撑自身重量外加巨型载荷。日本工程巨头大林组声称将在2050年建成太空电梯，同时纳米管合成技术的突破正在逼近不可能的目标：比钢缆强100倍的材料，可制造成公里长度。太空电梯不再是科幻小说——这是一项投资100亿美元的工程挑战，有潜力将发射成本从每公斤22,000美元降至仅500美元。</description>
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