What does a simulated Martian voyage entail? Well, for starters, 500 days in a "hermetically sealed module." The crew of six (bound to become either your best friends or worst enemies) will live and work in a roughly 650 square foot area filled with everything a fake astronaut could ever desire: Sauna! Gym! Experimental greenhouse! Food will be rationed, smoking and alcohol is forbidden, and every seven days you get a two-day "weekend." (which begs the question: what does one do on days off?) Should you need to communicate with "earth," a 20-minute signal delay will replicate interplanetary conditions.