NASA Administrator Charles Bolden, left to right, Firouz Naderi, Director for the Solar System Exploration, and John Brophy, Electric Propulsion Engineer, are shown during Bolden’s visit to the Jet Propulsion Laboratory in Pasadena, Calif., on Thursday, May 23, 2013. NASA engineers are developing an ion engine for an asteroid capture mission later this decade. — AP Photo
PASADENA, California – Surrounded by engineers, NASA chief Charles Bolden inspected a prototype spacecraft engine that...
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