Long-duration space flight alters fluid-filled spaces along veins and arteries in the brain, according to new research from Oregon Health & Science University and scientists across the country.

"These findings have important implications as we continue space exploration," said senior author Juan Piantino, M.D., assistant professor of pediatrics (neurology) in the OHSU School of Medicine. "It also forces you to think about some basic fundamental questions of science and how life evolved here on Earth."

The research involved imaging the brains of 15 astronauts before and after extended tours of duty on the International Space Station.

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