June 3, 2015, 10:00am ET - 11:30am ET
On June 3, 1965, Air Force Capt. Ed White became the first American to walk in space when he stepped out of his Gemini IV spacecraft. Fifty years later, America’s human spaceflight program sits on a fulcrum. The space shuttle has been retired, and the International Space Station has been occupied for almost 15 years. The United States and its international partners are developing capabilities that could take humans to Mars in the 2030s, while private companies are working on spacecraft to ferry astronauts to and from the ISS by 2017.
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