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Date: 2011-12-17 09:01:00Private spaceflight Commercial Crew Development Space Act Agreement NASA Human-rating certification International Space Station DIRECT Commercial Orbital Transportation Services CST-100 Spaceflight Human spaceflight Manned spacecraft | NASA FY 2012 Budget Estimates, Exploration SystemsAdd to Reading ListSource URL: www.govbudgets.comDownload Document from Source WebsiteFile Size: 459,58 KBShare Document on Facebook |