Commercial Orbital Transportation Services
Commercial Orbital Transportation Services
Former NASA program.
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Readers' pathsAug 2026 – Oct 2026
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NASA space program partnership with space companies.
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Uncrewed cargo spacecraft developed by Orbital Sciences.
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Uncrewed cargo spacecraft developed by Orbital Sciences.
10%
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Family of SpaceX spacecraft.
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2011 American crewed spaceflight to the ISS and final mission of the Space Shuttle program.
7.9%
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Medium-lift expendable rocket by Northrop Grumman.
6.8%
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NASA program for delivery of cargo to the ISS.
6%
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Partially-reusable medium-lift launch vehicle by SpaceX.
5.2%
Private spaceflight
Spaceflight not by a government.
2.1%