The last Space Shuttle returned to Earth 15 years ago

This week marks 15 years since a Space Shuttle last returned from orbit and the end of NASA's Space Shuttle program. Space Shuttle Atlantis landed at the Shuttle Landing Facility (SLF) at Kennedy Space Center 15 years ago this week, marking the final mission for the program. STS-135 was originally designated STS-335, the Launch On Need (LON) mission for the previous STS-134 flight of Space Shuttle Endeavour. LON missions had been a feature of the Space Shuttle program following the Columbia disa