When something goes wrong with the ISS, astronauts usually don their suits and brave the harsh conditions of space to do what needs to be done. But the space station's Canadian robotic arm (aptly called Canadarm2) is currently attempting to fix itself with minimal human input, thanks to its very special passenger -- a multi-limbed helper robot called Dextre. Canadarm2 carries the handy
manrobot around to fix anything that's broken on the ISS or to catch unmanned vehicles headed for the station, such as SpaceX's Dragon capsule. This time, though, Canada's Space Agency is remotely controlling Dextre to move and replace old cameras on Canadarm2 itself.