There is a serious side effect to going to space, NASA says

A NASA study revealed that over half of U.S. astronauts experience vision changes after six months on the ISS, linked to Space-Associated Neuro-ocular Syndrome (SANS) caused by fluid shifts in microgravity. Ongoing research with a device called the Thigh Cuff aims to mitigate these effects, potentially benefiting both space missions and medical conditions on Earth.

Want More Context? 🔎