The male volunteers have been in isolation in a Moscow parking lot to simulate a 520-day-mission to Mars, part of the European Space Agency's experiment to determine the challenges facing future space travelers. Scientists placed the six men from Russia, China and Europe in a tight space that mirrors a real space flight in June last year.
During the period, the crew dressed in blue jumpsuits has lived in a tight windowless space, showered on rare occasions and survived on canned food. Messages from friends and family came with a 20-minute lag based on the simulated distance to Earth.
cnn