Watch two NASA astronauts complete the 200th spacewalk outside the ISS

Today, NASA astronauts Peggy Whitson and Jack Fischer will perform the 200th spacewalk outside the International Space Station (ISS). Live coverage of the milestone event will begin in the stream above at around 6.30AM ET, with the spacewalk itself scheduled to start 8AM and continue for six-and-a-half hours.For Fischer (wearing the space suit with no stripes), it will be a new experience — his first ever spacewalk. But for Whitson, the commander on the current (and 51st) expedition to the