ABOARD THE INTERNATIONAL SPACE STATION -- 09 Jul 2013 -- European Space Agency astronaut Luca Parmitano, Expedition 36 flight engineer, uses a digital still camera to expose a photo of his helmet visor during a session of extravehicular activity (EVA) as work continues on the International Space Station. Also visible in the reflections in the visor are various components of the space station and a blue and white portion of Earth. During the six-hour, seven-minute spacewalk, Parmitano and NASA astronaut Chris Cassidy (out of frame), flight engineer, prepared the space station for a new Russian module and performed additional installations on the station's backbone -- Picture by Lightroom Photos/NASA