NASA: Studying twins for a year in space

A Northwestern-led research team is one of 10 NASA-funded groups across the country studying identical twins Scott and Mark Kelly to learn how living in space for a long period of time, such as a mission to Mars affects the human body. While Scott spends a year in space, his brother, Mark, also a veteran NASA astronaut, will remain on Earth, as a ground-based control. The study will allow researchers to understand how the long-term exposure to space impacts the human brain and body and how the s...
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