Earth, Moon and Mars: Size to scale, distance... not so much.
Earth, Moon and Mars: Size to scale, distance... not so much.Courtesy Bluedharma
Imagine being asked to volunteer to live and interact with only five people for 520 days in very cramped quarters. You would only be able to speak with your friends and family via voice communication with a 20-minute delay. Well, the European Space Agency (ESA) made such a request to the general European public, and has finally selected the two candidates to accompany four Russian candidates from the Russian Institute for Biomedical Problems to simulate the conditions of a manned mission to Mars.

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