Science and technology

Associated Press
NASA Administrator Charles Bolden, right, talks with electric propulsion engineer John Brophy during a visit to Nasa's Jet Propulsion Laboratory in Pasadena, Calif., Thursday, May 23, 2013. They are standing next to an ion engine, which NASA engineers plan to use for an asteroid capture mission later this decade. (AP Photo/Nick Ut)

View gallery

500 photos

Astronomy, meteorology, environment, archaeology, electronics, computers and gadgets

View Comments (0)