Astronaut Scott Kelly prepares to spend a year in space

NASA Astronaut Scott Kelly is in Moscow preparing for his trip to space. He will soon live and work on the International Space Station for a year.

The unprecedented time in space is designed to help scientists understand more about our human physiology. NASA will learn how the space environment affects the human body over a longer period of time. The research could help NASA learn how much further we can go away from planet Earth.

Watch Tom Koch's interview with Scott Kelly above to learn more.

Kelly will launch to the ISS on March 27.
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