What One Year of Space Travel Does to the Human Body

After months aboard the International Space Station, Scott Kelly and Mikhail Kornienko are coming home.

"In the 340 days they spent on the International Space Station, the American astronaut and Russian cosmonaut orbited Earth 5,440 times, conducted hundreds of experiments, and floated out in space in bulky suits, secured only by a tether, to maintain one of humanity’s most sophisticated pieces of engineering.

There are also some things they didn’t do, like walk or shower, or feel the wind against their skin, or sleep in a bed that didn’t hang from a wall, or drink water that wasn’t recycled urine and sweat...

After months aboard the International Space Station, Scott Kelly and Mikhail Kornienko are coming home.

"In the 340 days they spent on the International Space Station, the American astronaut and Russian cosmonaut orbited Earth 5,440 times, conducted hundreds of experiments, and floated out in space in bulky suits, secured only by a tether, to maintain one of humanity’s most sophisticated pieces of engineering.

There are also some things they didn’t do, like walk or shower, or feel the wind against their skin, or sleep in a bed that didn’t hang from a wall, or drink water that wasn’t recycled urine and sweat...