NASA has selected Lockheed Martin and the team of Northrop Grumman and Boeing to work on competing designs for the Crew Exploration Vehicle (CEV), the spacecraft the U.S. space agency hopes to field around 2010 as a replacement for the space shuttle.

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Brian Berger is editor in chief of SpaceNews.com and the SpaceNews magazine. He joined SpaceNews.com in 1998, spending his first decade with the publication covering NASA. He was named senior staff writer in 2004, a position he held until being named...