Astronaut Scott Kelly's Poop Will Turn Into Shooting Stars In The Sky, NASA Says

How does NASA plan to get rid of astronaut Scott Kelly's poop aboard the International Space Station (ISS)? It simply had his wastes released into space for incineration in Earth's atmosphere.

CNET reports that Kelly and fellow astronaut Mikhail Kornienko have been sent to space for a year and half year stay. They will return home in March 2016. The stay in space will provide scientists on Earth data about the effects of microgravity on human body during a year in space.

"I think the legacy of this mission will be based on the science of having us in space for a year. The great data we collected, what we learned about being in space for this long and how that will help our journey to Mars someday," Kelly reportedly said in an interview.

NASA explained through an infographic that Kelly would produce 180 pounds of feces and will have to drink 730 liters of recycled urine and sweat aboard the ISS. The feces will be released into Earth's atmosphere and burn like shooting stars. The astronaut will also have to work 700 hours during the year to keep his bones, muscles and heart strong.

Most importantly, around two liters of fluid will shift out of his legs towards his leg due to microgravity.