Expedition 23 preflight

JSC2010-E-041313 (19 March 2010) --- At the Gagarin Cosmonaut Training Center in Star City, Russia, the prime crew for the next Soyuz launch to the International Space Station receives its certification for flight from Russian space officials March 19, 2010. At the top of the picture, Expedition 23 Russian cosmonaut Alexander Skvortsov (left), Soyuz commander, cosmonaut Mikhail Kornienko (center) and NASA astronaut Tracy Caldwell Dyson, both Expedition 23 flight engineers, listen as the head of the Russian Federal Space Agency, Anatoly Perminov (lower right) provides the certification along with cosmonaut Sergei Krikalev (lower left), who is the head of the Cosmonaut Training Center. Skvortsov, Kornienko and Caldwell Dyson will launch from the Baikonur Cosmodrome in Kazakhstan April 2 in their Soyuz TMA-18 spacecraft and will dock to the station April 4. Credit: NASA/Stephanie Stoll