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KENNEDY SPACE CENTER, FLA. - At a post-landing press conference at NASA's Kennedy Space Center, the STS-115 crew answer questions from the media about their mission. Seated from left are Commander Brent Jett, Pilot Christopher Ferguson, and Mission Specialists Joseph Tanner, Daniel Burbank, Heidemarie Stefanyshyn-Piper and Steven MacLean, who represents the Canadian Space Agency. During the mission to the International Space Station, astronauts delivered and installed the massive P3/P4 truss, an integral part of the station's backbone, and two sets of solar arrays that will eventually provide one quarter of the station's power. After 11 days, 19 hours and 6 minutes in space, the crew returned to Earth aboard Atlantis at 6:21:30 a.m. EDT. Photo credit: NASA/Cory Huston