ESA video: Iriss liftoff
ESA astronaut Andreas Mogensen, commander Sergei Volkov and Aidyn Aimbetov were launched into space this morning 2 September at 04:37:43 GMT (06:37:43 CEST) from Baikonur cosmodrome, Kazakhstan.
The launch marks the start of ESA's 10-day 'iriss' mission that will focus on testing new technologies and ways of running complex space missions.
The astronaut's Soyuz TMA-18M spacecraft was pushed into Earth orbit as planned accelerating 50 km/h on every second for the first nine minutes of their launch.
The spacecraft separated from the Soyuz launcher at 04:46 GMT (06:46 CEST)