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RE: [독일이야기] 숱한 실패를 통해 성공할 수 있었던 스페이스엑스. 그런데 우린?...
Elon Musk tweeted @ 14 Sep 2017 - 09:00 UTC
Long road to reusabity of Falcon 9 primary boost stage…When upper stage & fairing also reusable, costs will drop by… twitter.com/i/web/status/9…