In a quiet corner of the International Space Station, far from the bustle of experiments and Earth communications, three small robotic cubes drift through the air like hummingbirds in slow motion.

Valkyrie, a humanoid robot that was previously trained to assist NASA with Mars mission preparations, will soon return to the United States after spending nearly ten years in Edinburgh working with ...

Add Yahoo as a preferred source to see more of our stories on Google. PhD student Elle Miller (left) and Professor Sethu Vijayakumar (right) with the NASA Valkyrie robot. (CREDIT: University of ...