Sergei Ryazansky, leader of the Mars 500 simulated space mission crew seen during a news conference after the 105-day voluntary isolation inside a mock-up spaceship at the Institute of Medical and Biological Problems in Moscow.

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Russian cosmonaut physician Boris Morukov, director of the Mars 500 simulated space mission project, seen during a news conference after the 105-day experiment ended at the Institute of Medical and Biological Problems in Moscow.

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From right: Mars 500 crew leader Sergei Ryazansky and sports physiologist Alexei Shpakov welcomed by researchers after exiting the mock-up spaceship at Moscow's Institute of Medical and Biological Problems, where the six project participants spent 105 days isolated from the world.

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From left: Mars 500 crew leader Sergei Ryazansky of Moscow's Institute of Medical and Biological Problems, doctor Alexei Baranov, German military engineer Oliver Knickel, sports physiologist Alexei Shpakov, Air France pilot Cyrille Fournier and cosmonaut Oleg Artemyev seen after exiting the mock-up spaceship where the six-men crew spent 105 days isolated from the world.

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From left: Mars 500 crew leader Sergei Ryazansky of Moscow's Institute of Medical and Biological Problems, doctor Alexei Baranov, German military engineer Oliver Knickel, sports physiologist Alexei Shpakov, Air France pilot Cyrille Fournier and cosmonaut Oleg Artemyev seen after exiting the mock-up spaceship where the six-men crew spent 105 days isolated from the world.

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From left: Mars 500 crew leader Sergei Ryazansky of Moscow's Institute of Medical and Biological Problems, doctor Alexei Baranov, sports physiologist Alexei Shpakov, Air France pilot Cyrille Fournier, German military engineer Oliver Knickel and cosmonaut Oleg Artemyev seen after exiting the mock-up spaceship where the six-men crew spent 105 days isolated from the world.

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From right: Russian sports physiologist Alexei Shpakov, German military engineer Oliver Knickel and Air France pilot Cyrille Fournier exit the mock-up spaceship, where the six-men "Mars mission" crew spent 105 days isolated from the world.

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From right: German military engineer Oliver Knickel and Air France pilot Cyrille Fournier exit the mock-up spaceship at Moscow's Institute of Medical and Biological Problems, where the six-men Mars 500 crew spent 105 days isolated from the world.

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Russian cosmonaut Oleg Artemyev exits the mock-up spaceship at the Institute of Medical and Biological Problems in Moscow, where the six-men Mars 500 crew spent 105 days isolated from the world.

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