The closest thing on Earth to a mission to Mars

By Meera Senthilingam, for CNN

Updated 1321 GMT (2121 HKT) December 9, 2015

Scientists are using the Concordia research station in Antarctica to research the effects of long space missions. In winter, no sunlight is seen for four months and the typical crew of 12 live in complete isolation.
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Scientists are using the Concordia research station in Antarctica to research the effects of long space missions. In winter, no sunlight is seen for four months and the typical crew of 12 live in complete isolation.
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The next goal for space exploration is for humans to travel to Mars. Antarctica provides a good analogue to research some of the physical and psychological challenges of during long-duration spaceflight.
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The next goal for space