Astronauts may have vision problems because of liquid in their brains

In microgravity, astronauts’ brains fill with fluid and it doesn’t drain for months after they return to Earth, which may be why their vision worsens

Source:
https://www.newscientist.com/article/2201693-astronauts-may-have-vision-problems-because-of-liquid-in-their-brains/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home