NEW : They hand each member of the group a red rose . NEW : While secluded , the group has few enemies . NEW : The group asks scientists to put the data it gathered to good use . The group 's mission simulates a NASA mission to Mars .
NEW : Crowds hand each member of the group a red rose . NEW : While secluded , the crew has few luxuries . NEW : The group asks scientists to put the data it gathered to good use . The group 's isolation simulates a 520-day mission to Mars .