The next trio of residents that will launch to the International Space Station pose for pictures at the site's Yuri Gagarin museum.

At the Gagarin Cosmonaut Training Center in Star City, Russia, outside Moscow, the next trio of residents that will launch to the International Space Station pose for pictures at the site's Yuri Gagarin museum April 25, 2012 following their press conference. Expedition 31 flight engineer Joe Acaba of NASA (left) and two cosmonauts -- Soyuz Commander Gennady Padalka (center)and flight engineer Sergei Revin (right) -- will launch on May 15 from the Baikonur Cosmodrome in Kazakhstan to the International Space Station. Photo credit: NASA/Stephanie Stoll