Expedition 23 crew members NASA Flight Engineer Tracy Caldwell Dyson, left, Soyuz Commander Alexander Skvortsov and Flight Engineer Mikhail Kornienko, right, leave the Cosmonaut Hotel on the morning of their launch on a Soyuz rocket to the International Space Station, Friday, April 2, 2010, in Baikonur, Kazakhstan. Photo Credit: (NASA/Bill Ingalls)