We Might Age More Slowly in Space

Scott Kelly and Russian cosmonaut Mikhail Kornienko on their 300th consecutive day in space aboard the ISS.
Photo Credit: NASA
Our Speed and Accuracy Could Decrease

Scott Kelly on a Dec. 21, 2015 spacewalk.
Photo Credit: NASA
Our Bones Might Not Form as Quickly

Scott Kelly during his Year in Space aboard the ISS, with a view of Earth in the foreground.
Photo Credit: NASA
Our Digestion Is Different in Space

Scott Kelly with some citrus fruits on the ISS during the Year in Space.
Photo Credit: NASA
There Might Be a Space Gene

Brothers Mark Kelly (with mustache) and Scott Kelly.
Photo Credit: NASA Johnson/Flickr (CC)