Mars test mission begins on Earth
An international team of researchers are set to get a very close experience of what a manned mission to Mars would be like - without leaving Earth.
Six men will lock themselves up in a windowless mock space ship for one and a half years. This roughly equates the time needed to travel to and from Mars.
The Mars-500 experiment hopes to help a real space crew of the future cope better with long term isolation.
The researchers will have to eat canned food similar to that currently on offer to astronauts on the International Space Station.
Showers will only be available once every ten days, further mimicking space conditions.
A Chinese researcher, three Russians and two Europeans will make up the team for the study which will take place in Moscow.