NASA's STS-115 Atlantis crew says farewell to the Expedition 13 astronauts aboard the International Space Station (ISS). At front, facing away, is STS-115 commander Brent Jett in front of pilot Chris Ferguson. The faces of Expedition 13 commander Pavel Vinogradov (center) and STS-115 mission specialist Heidemarie Stefanyshyn-Piper are also visible in this view inside the station's Destiny lab. Credit: NASA TV. Click to enlarge.
