Long space missions take a toll on astronaut brains, study finds

two astronauts in white spacesuits working to set up an ice-drilling rig on mars.

Long missions and frequent voyages to space may take a toll on astronaut brains, a new study suggests.

Previous research discovered that spaceflight can trigger widespread changes in the human brain. Shedding light on these changes and their potential effects may prove key to success in future missions, such as planned multi-year voyages to Mars.