Astronaut Health

Organizations all around the world are working to send humans to Mars, from NASA and other government agencies to commercial operations like Boeing and SpaceX. But the trip to the Red Planet won’t be a short one — NASA’s round-trip Mars mission, which is planned for the 2030s, could take up to three years of space travel. Humans haven’t spent even close to that amount of consecutive time in space.

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NASA/Crew of STS-132 [Public domain], via Wikimedia Commons