Aboard the International Space Station from left are Paolo Nespoli, Dmitry Kondratyev and Cady Coleman. Photo: NASA/May 21, 2011
A rare undocking procedure was approved.
The International Space Station. Photo: NASA/March 7, 2011
The all-clear was issued around noon PDT.
Expedition 27 trio Ron Garan, Alexander Samokutyaev and Andrey Borisenko. Photo: Gagarin Cosmonaut Training Center
Crew will continue scientific research and perform station maintenance, NASA says.