Ever wondered what the inside of a spacesuit looks like? Neither had I, really. Last week, however, the world had reason to consider the inner workings of the garment that my new favorite site on all the Internet refers to as the "space costume." A suit malfunction occurred nearly two hours into a planned six-hour space walk, causing NASA first to abruptly abort the walk and second to begin examining what might have caused a space suit -- a high-tech spaceship for one -- to spring a leak.
Agency engineers aren't yet sure what caused Luca Parmitano's suit to become, suddenly, unsuitable. But Chris Cassidy, Parmitano's crewmate on the International Space Station and his partner on the aborted walk, decided to take advantage of all the scrutiny to give the world a teachable moment. In the video below, Cassidy gives a guided tour of the innards of a spacesuit, highlighting the points at which something might have malfunctioned.