NASA Administrator Mike Griffin told members of a Senate subcommittee May 12 he is willing to delay research activity aboard the International Space Station (ISS) — and launch some ISS hardware on something other than space shuttles — if that’s what it takes to replace the shuttle fleet with a new vehicle by 2010.

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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...