"現在の構想では、最終的にはケーブルの長さ1kmあたり7kg、アンカーまで含めた全体の質量は約1,400トンとなる。建設費は100億ドルから200億ドル（1兆円から2兆円）とされている[13]ただし、実際に十人単位の人を運べるものを建設する場合、値段はより高額となると考える研究者もいる[14]。なお、国際宇宙ステーションの建設・運用には1,000億USドル以上の費用が掛かっているが、こちらはすべてをロケットで打ち上げているため単純比較はできない。"

軌道エレベータ - Wikipedia (via takaakik)

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