Last week, 32 talented candidates gathered at the European Astronaut Centre in Cologne, Germany, with the hope of becoming part of a unique study that will act as a platform for human exploration of the Solar System. The study, called Mars500, is a ground-based simulation of a mission to Mars and back.
Two of the candidates, together with four Russian volunteers, will be sealed in an isolation chamber for a total of 105 days starting in October. This is followed by the full isolation period with another two European candidates, which lasts for 520 days starting early in 2009.