Some of the effects that radiation has on a human body are shown below. Eyes High doses can cause cataracts. Thyroid Radioactive iodine can build up and cause cancer, particularly during growth.

Space changes the human body in many ways. From bone loss to bloated faces, here's how microgravity and radiation affect the ...

When astronauts Sunita Williams and Butch Wilmore returned to Earth after an unexpected nine-month stay aboard the ...

What we found was, if you do enough resistive exercise, you can halt the effects of the bone loss and the muscle atrophy. Narrator: Without gravity pulling them down, fluids pool in the body ...

X rays are a form of electromagnetic radiation that can penetrate or pass through the human body and produce shadow-like images of bones and some organs ... procedures generally produce no adverse ...

NASA astronauts are returning to Earth after nine months in space. Experts have said a prolonged period in space can come ...

Nine months in space can permanently alter the body, leaving astronauts with possible long-term health effects.

Image caption, Coloured scanning electron ... They will usually just pass right through it. Some of the effects that radiation has on a human body are shown below. Eyes High doses can cause ...

NASA astronauts Butch Wilmore and Suni Williams have returned to Earth after nine months in space, and the before-and-after ...