ESA-selected Mars500 crewmember Oliver Knickel uses the telephone inside the special isolation facility in Moscow. Knickel is one of six crewmembers spending 105 days inside the facility for the Mars500 study. During their stay in the facility, the crew will experience aspects of a mission to the Red Planet, including launch, the outward journey, arrival at Mars and, after an excursion to the surface, the long journey home. Their mission will help prepare for a real human mission to Mars in the future. The crew entered the isolation facility on 31 March 2009.