Then on Monday, crew members Hadfield, Marshburn and Roman Romanenko will undock their Russian Soyuz from the station and head back to Earth for a planned 10:31pm EDT landing in Kazakhstan.
Once on board, Cassidy, Vinogradov and Misurkin will join the rest of the crew of their mission, known as Expedition 35: Canadian Chris Hadfield, NASA astronaut Tom Marshburn, and Russian cosmonaut Roman Romanenko, all of whom have been on the station since December.