Cosmonauts from the Russian state space corporation Roscosmos, Dmitry Patlin and Konstantin Borisov, and NASA astronaut Denise Burnham have begun training, the Yuri Gagarin Cosmonaut Training Center said. They completed all stages of the simulated flight to the International Space Station (ISS), including pre-launch preparations, launching a spacecraft into orbit, orbital maneuvering, approach to the station and docking. Photos: Yuri Gagarin Cosmonaut Training Center.