Astronauts To Make Unexpected Spacewalk After Mobile Transporter Fails
NASA says the spacewalk is needed to repair a mobile transporter ahead of the arrival of a supply spacecraft to the International Space Station.By Samantha Crook | December 19, 2015
Crew members Scott Kelly and Tim Kopra will be on the outside of the ISS to fix an issue with the station's robotic arm. The problem couldn't be fixed remotely from the space center in Houston. (Video via NASA)
The fix is pretty urgent. The arm is needed to dock a supply spacecraft soon to arrive from Kazakhstan.