ISS: Astronauts undertake second maintenance spacewalk

Expedition 48 astronauts Jeff Williams and Kate Rubins left the confines of the International Space Station for the second time in two weeks on Thursday. Switching their space suits to battery power they scaled the outside of the Space Station in order to retract a thermal radiator that forms part of the ISS cooling system.
The crew also tightened bolts on a joint that enables one of the station’s solar arrays to rotate and installed a high-definition television camera that will be used to monitor activities outside the Space Station.
The approximately six and a half hour spacewalk is the 195th spacewalk in support of station assembly and maintenance, according to NASA.