Results show the human body changes, but not dramatically.
Not much can be said yet of the differences between the identical twins’ genetic makeup
Mark Kelly mocks Scott Kelly over space gardening abilities
SpaceX's Dragon splashes down from space with 3,700 lbs of stuff
See the world anew, through the eyes of a long-term space traveler
Plus, twin red panda cubs
The end of a year in space
Mark and Scott Kelly are giving scientists a unique look at what space does to the human body
He spent a year in space, but the fun's not over yet
Coverage begins Tuesday at 4:15 PM Eastern
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