NASA astronauts conduct 7-hour spacewalk
\nNASA astronauts Jeff Williams and Kate Rubins on Thursday conducted a seven-hour-long spacewalk from the International Space Station, the 195th spacewalk ever conducted for station maintenance. During the walk, the astronauts retracted a thermal radiator, installed two enhanced HD cameras on the station’s truss and fixed a joint that enables one of the ISS’s solar arrays to rotate.