page_title: STS-127
section_title: 29 July (Flight Day 15)
hierarchical_section_title: STS-127 / Mission timeline / 29 July (Flight Day 15)
caption_attribution_description: English: Layers of Earth's atmosphere, brightly coloured as the sun sets, are featured in this image taken by the STS-127 crew on the Earth-orbiting space shuttle Endeavour. Deutsch: Unterschiedliche Schichten der Erdatmosphäre bei Sonnenuntergang. Dieses Bild wurde von der STS-127 Besatzung aus dem erdumkreisenden Spaceshuttle Endeavour gemacht.
context_page_description: STS-127 was a NASA Space Shuttle mission to the International Space Station. It was the twenty-third flight of Space Shuttle Endeavour. The primary purpose of the STS-127 mission was to deliver and install the final two components of the Japanese Experiment Module: the Exposed Facility, and the Exposed Section of the Experiment Logistics Module. When Endeavour docked with the ISS on this mission in July 2009, it set a record for the most humans in space at the same time in the same vehicle, the first time thirteen people have been at the station at the same time. It also tied the record of thirteen people in space at any one time.
  The first launch attempt, on 13 June 2009, was scrubbed due to a gaseous hydrogen leak observed during tanking. The Ground Umbilical Carrier Plate on the external fuel tank experienced a potentially hazardous hydrogen gas leak similar to the fault that delayed the Space Shuttle Discovery mission STS-119 in March 2009.
context_section_description: The OBSS was grappled by the shuttle's robotic arm and used to inspect Endeavour's thermal protection system for damage from orbital debris. The imagery will be analyzed to clear the shuttle for reentry. Meanwhile, the foam loss on the external tank was initially attributed to substrate contamination ahead of the application of the foam. Later during the processing of STS-128, voids in the foam was highlighted as a trigger for the shedding. The air trapped in the voids could have expanded due to the high temperatures generated during ascent thus breaking the foam.
caption: Image of orbital sunset taken from Endeavour one day before the shuttle landed
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