NASA videos shows the tricky work of spacewalkers

Two astronauts successfully completed a spacewalk outside the International Space Station (ISS) on Wednesday, March 23. NASA astronaut Raja Chari and ESA (European Space Agency) astronaut Matthias Maurer worked outside the orbiting outpost for 6 hours and 54 minutes before returning inside at 3:26 p.m. ET. The entire spacewalk was livestreamed using cameras attached to…