page_title: STS-128
section_title: 11 September (Flight Day 15 – Landing)
hierarchical_section_title: STS-128 / Mission timeline / 11 September (Flight Day 15 – Landing)
caption_attribution_description: English: Trailing its drag chute, Space Shuttle Discovery slows to a stop after landing at Edwards Air Force Base to conclude its almost 14-day, 5.7-million-mile journey to the International Space Station on mission STS-128.
context_page_description: STS-128 was a NASA Space Shuttle mission to the International Space Station that launched on 28 August 2009. Space Shuttle Discovery carried the Multi-Purpose Logistics Module Leonardo as its primary payload. Leonardo contained a collection of experiments for studying the physics and chemistry of microgravity. Three spacewalks were carried out during the mission, which removed and replaced a materials processing experiment outside ESA's Columbus module, and returned an empty ammonia tank assembly.
  The mission's first launch attempt was delayed due to weather concerns, including multiple weather violations in NASA's launch rules, beginning over two hours before the scheduled launch. The second launch attempt, scheduled for 26 August 2009 at 01:10:22 EDT, was called off the previous evening due to an anomaly in one of the orbiter's fuel valves. The launch finally took place on 28 August 2009 at 23:59 EDT. Discovery landed on 11 September 2009 at Edwards Air Force Base, which was the last landing of a shuttle to occur at the California site.
context_section_description: On flight day 15 at 19:47 EDT (23:47 UTC), Discovery started the de-orbit burn for landing at Edwards Air Force Base after its two landing attempts at Kennedy Space Center the previous day were waved off. Discovery touched down safely at 20:53 EDT (17:53 PDT/00:53 UTC).
  The landing marked the final time a Space Shuttle mission concluded at Edwards Air Force Base, as well as the last time a ferry flight would be needed for an operational orbiter. Discovery returned to KSC on Monday, 21 September 2009 after refueling stops at Amarillo International Airport, Fort Worth Naval Station and Barksdale Air Force Base on 20 September.  The last seven missions of the shuttle all touched down at Kennedy Space Center.
caption: After weather delayed two landing opportunities at Kennedy Space Center, Discovery lands at Edwards Air Force Base, California.
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