When astronauts stay in outer space for extended periods, they frequently develop a vision problem known as spaceflight-associated neuro-ocular syndrome (SANS). Scientists are now trying to keep that ...

Becoming an astronaut requires perfect 20/20 vision, but unfortunately, the effects of space can cause astronauts to return to Earth with degraded eyesight. Now, researchers from UT Southwestern ...

A new sleeping bag may stop astronauts' eyeballs squashing in zero-gravity, per a study reported by the BBC. The bags created a vacuum which sucked body fluids from the head towards the feet, the ...