Sunita Williams & Butch Wilmore To Undergo These Health Challenges After Their Return To Earth

Shielding is best done with heavy materials like lead or water, but you need vast quantities of it,

said Eggl, of University of Illinois Urbana-Champaign

The best results that we have to show that we're being very effective is that we don't really have a fracture problem in astronauts when they return to the ground,"

Bokhari told AFP

This happens to every single astronaut, even those who go into space just for a few days."

Emmanuel Urquieta, vice chair of Aerospace Medicine at the University of Central Florida, told AFP

We try to keep the bone strong and muscles strong to minimize any effects of microgravity,

Dervay said

There is some individual variability on how quickly they recover, but it is pretty impressive to see how they will turn the corner and really adapt quickly,

Dervay said

We don’t see any need for any special precaution,

Dina Contella, deputy manager of NASA’s International Space Station Program, said Friday

Jessica Meirastronaut

I had a pretty severe case of SANS,

NASA astronaut Jessica Meir said before the latest launch

Imagine being stuck in a van with anybody for three years: these vessels aren't that big, there's no privacy, there's no backyard to go to,

he said