The final astronauts of NASA's Space Shuttle Program reflect on their mission to the International Space Station in front of Atlantis.

The final astronauts of NASA's Space Shuttle Program reflect on their successful STS-135 mission to the International Space Station in front of space shuttle Atlantis. From left, are Mission Specialist Sandy Magnus, Pilot Doug Hurley and Commander Chris Ferguson. Four astronauts returned to Earth on the Shuttle Landing Facility's Runway 15 at NASA's Kennedy Space Center in Florida at 5:57 a.m. EDT. Atlantis' final return from space completed a 13-day, 5.2-million-mile journey to the International Space Station.

STS-135 delivered spare parts, equipment and supplies in the Raffaello multi-purpose logistics module that will sustain station operations for the next year. STS-135 was the 33rd and final flight for Atlantis, which has spent 307 days in space, orbited Earth 4,848 times and traveled 125,935,769 miles. For more information visit, www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts135/index.html. Photo credit: NASA/Kim Shiflett