https://blogs.nasa.gov/bolden/2014/09/16/american-companies-selected-to-return-astronaut-launches-to-american-soil/ (16 sept 2014 año – 16 sept 2014 año)

Descripción:

Nasa Chief announces Spacex and Boeing as commercial crew partners to return space launches to american soil. reusability and private sector reduce money per launch.

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