
Microgravity Reconfigures Astronaut Brains, MRI Study Shows
A study of 26 astronauts’ MRIs before and after spaceflight finds the brain shifts upward and backward inside the skull in microgravity, with larger changes on longer missions and sensory/motor regions most affected; while some space-induced sensory conflicts can occur, no serious symptoms were reported, underscoring the need to understand these brain changes for astronaut safety and longevity.












