ISS013-E-49267 (8 July 2006) --- Astronaut Piers J. Sellers, STS-121 mission specialist, participates in the mission's first session of extravehicular activity (EVA) while the Space Shuttle Discovery was docked with the International Space Station.
ISS013-E-49267 (8 July 2006) --- Astronaut Piers J. Sellers, STS-121 mission specialist, participates in the mission's first session of extravehicular activity (EVA) while the Space Shuttle Discovery was docked with the International Space Station.