The International Space Station (ISS) crew members U.S. astronaut Joseph Acaba, left, Russian cosmonauts Gennady Padalka, center, and Sergei Revin sit inside the Soyuz TMA-04M capsule shortly after landing near the town of Arkalyk in northern Kazakhstan Sept. 17, 2012.  A Russian Soyuz capsule landed on the Kazakh steppe on Monday, delivering a trio of astronauts from a four-month stint on the International Space Station. (AP Photo/Shamil Zhumatov, pool)