NASA's Astronaut Twins: Samples from Kelly Brothers Will Take Months to Analyze

Former NASA astronaut Scott Kelly has been back on Earth for more than two months, but much of the science conducted during his unprecedented yearlong stay aboard the International Space Station (ISS) just landed. When SpaceX's robotic Dragon cargo spacecraft splashed down in the Pacific Ocean on May 11 after a month at the orbiting lab, it contained more than 1,000 samples of blood, saliva, urine and other biological material collected during the one-year mission, which Kelly performed with cos