Ever tried reading the instruction manual to a space station sewage system while in zero gravity? According to the crew of the International Space Station, it's hard. Damn hard. So hard, in fact, that astronauts turned to the European Space Agency for augmented reality helmets that display repair instructions and data right on the machinery.
Read on for a full breakdown of augmented reality helmets, iPhone temperature sensors, and how ESA made a space helmet out of garage scraps.