On Earth, leg muscles constantly bear the load. Even if you skip leg workout day, they support the body against the tug of gravity whenever people stand, walk, or run. But in the near-zero gravity of ...

Dear Doctors: Our 11-year-old son is fascinated with those astronauts who are stuck on the space station. He asks about a lot is how being in space for that long affects the human body.

It’s a surprising admission from a man who’s experienced zero gravity more ... t happen.” Space travellers also talk of head congestion, as the fluids in the body are not being pulled ...

Over 60 women have traveled to space, yet none were pregnant during the trip, let alone gave birth while floating in zero gravity. But with talk of future space colonies and cities on Mars ...

The International Space Station is humanity ... that longer trips away from Earth’s gravity can have a detrimental effect on an astronaut’s body. Floating weightless invariably leads to ...