NASA / SCIENCE PHOTO LIBRARY NASA / SCIENCE PHOTO LIBRARY
International Space Station (ISS) construction in August 2007. NASA astronauts Clay Anderson (left), Expedition 15 flight engineer, and Rick Mastracchio (right), STS-118 mission specialist, are engaging in a space walk (extravehicular activity, EVA) to continue the construction of the ISS. They relocated the S-Band Antenna Sub-Assembly from Port 6 (P6) to Port 1 (P1) truss, installed a new transponder on P1 and retrieved the P6 transponder. Photographed on 15th August 2007, during mission STS-118 (8th to 21st August 2007), flown by the Space Shuttle Endeavour.
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