Another spacecraft is close to joining the coveted list of machines to achieve successful human spaceflight following last week's launch and return of Boeing's Starliner crew capsule.
While Boeing will provide much-needed competition for SpaceX's Crew Dragon program, it will be only the second commercial capsule to take humans to the International Space Station (ISS).
Government agencies led the way for human spaceflight, and private companies are now taking the mantle. Here's a brief look at the history of human spaceflight and the spacecraft that made it possible.
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