The Soyuz TMA-04M spacecraft carrying Expedition 31 Flight Engineers Gennady Padalka, Joseph Acaba and Sergei Revin is moments from docking to the station's Poisk module. Credit: NASA

Expedition 31 crew members Gennady Padalka, Joe Acaba and Sergei Revin were welcomed aboard the International Space Station after the hatches opened Thursday at 4:10 a.m. EDT. They docked to the Poisk module at 12:36 a.m. after a two day journey that began in Baikonur Cosmodrome, Kazakhstan aboard a Soyuz TMA-04M spacecraft