Astronauts Study Why Weightlessness Alters Vision

Astronauts on the International Space Station are studying "why weightlessness alters vision," notes Red Orbit. "Even after 50 years of human spaceflight, scientists still are making new discoveries about human health in microgravity. New research points to a permanent vision risk for astronauts living without gravity. A large part of the International Space Station’s mission is to use this data to design future studies to mitigate, and hopefully eliminate the dangers." Read more.