The effects of spaceflight on the human body

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It's Thursday, March 31, 2022.

After 355 days aboard the International Space Station, astronaut Mark Vande Hei returns to Earth both a NASA record holder and a changed man. Though his run was not as long as Peggy Whitson’s 665 cumulative days spent in microgravity, Vande Hei’s accomplishment is still one of the longest single stints in human spaceflight — and makes him the subject of intensive research into the effects of zero-gravity on humans.

Though NASA’s Human Research Program has spent 50 years studying the effects of spaceflight on the human body, the full impact of long-duration space travel has yet to be exhaustively researched. As humanity’s expansion into space accelerates in the coming decades, more people will be going into orbit — and going much farther — and the medical needs obviously increase along with this. Andrew Tarantola outlines where the research is headed.

— Mat Smith

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