* Astronomy

Six Russian volunteers are to get a taste of travelling to Mars, without ever leaving Moscow.

They will be locked up for 500 days in an airtight capsule resembling a spaceship, where they will eat sterile food and breath processed air.
The experiment is designed to help scientists better understand the demands of a long-haul space flight, in preparation for future Mars missions.
Researchers will start accepting the first applications this week.
If supplies run out, there'll be absolutely no asking for a re-fill: the doors of the "space ship" will be sealed for the whole 18 months of the experiment.
The mock-up "Mars cruiser" will actually look more like a cross between a standard three-bedroom flat and a stage set for a reality TV show.

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