NASA is sending self-charging robotic 'bees' to space station

New robots are about to create a buzz in space. Three hovering robots, dubbed Astrobees, will be heading to the International Space Station to help astronauts conduct research, do maintenance and track inventory, NASA said Tuesday in a blog post. Our @Space_Station crew is gaining 3 robotic helpers -- Astrobees! These cube-shaped robots will stay busy, flying around the orbital lab assisting basic tasks & allowing our astronauts more time for science. But how will they do it?