Their bones become fragile and they lose 1 percent of their bone mass per month – equivalent to an entire year of ageing on Earth. Radiation is another major concern. Although the ISS is ...

Most near-Earth satellites also operate in Earth’s radiation belts, a region of space up to almost 58,000 kilometers above our planet where many charged particles become trapped by Earth’s ...

The radiation in space is very much different from the radiation that we experience while on Earth. Studies have shown that unlike Earth's protective magnetic field, which shields us from high ...