Outside the International Space Station, Expedition 36 Flight Engineers Chris Cassidy of NASA and Luca Parmitano of the European Space Agency conducted a spacewalk July 9 to replace a failed communications receiver, relocate grapple bars for future spacewalks and string cables for the future arrival of a Russian laboratory module. The spacewalk was the first of two in as many weeks for Cassidy and Parmitano, who became the first Italian astronaut to walk in space and the 170th spacewalk in support of space station assembly and maintenance. Cassidy now has conducted five spacewalks in his career. They will venture outside the Quest airlock again on July 16 for another series of tasks associated with the upgrade of station hardware.
[ Read the Article: Astronauts Successfully Complete 6-Hour ISS Spacewalk ]