The Russian mission to "Mars" will end today, when six cosmonauts will leave the mock spaceship they've been locked in for 520 days.
The three Russians, a Frenchman, an Italian-Colombian and a Chinese man were testing the physcial and psychological effects of the long-distance flight to Mars.
Instead of the high tech surrounds you might expect from a space shuttle, the men were locked into what is essentially a tin shed in a car park for 18 months.
During their "flight" they conducted fake emergencies and landings and received intermittent, and highly delayed, communications from loved ones.
The Telegraph reports that a female crew member from Canada was ditched after she was forcibly kissed by a Russian male colleague in a previous experiment.
The project cost £6million, and each crew member takes home £64,000 for taking part in the experiment.
Would £64,000 be enough for you to spend almost a year in a shed?