page_title: STS-134
section_title: 17 May (Flight Day 2 – OBSS inspection)
hierarchical_section_title: STS-134 / Mission timeline / 17 May (Flight Day 2 – OBSS inspection)
caption_attribution_description: English: Veteran NASA astronaut Michael Fincke, STS-134 mission specialist, appears delighted that, because of the weightlessness of space, he can renew doing chores which he can't do on Earth, like lifting heavy bags and floating freely at the same time. Fincke and five other astronauts share Endeavour with a large quantity of supplies and equipment as they head toward a date with the International Space Station (ISS). Endeavour was scheduled to link with ISS in less than 24 hours from the time this picture was recorded.
context_page_description: STS-134 was the penultimate mission of NASA's Space Shuttle program and the 25th and last spaceflight of Space Shuttle Endeavour. This flight delivered the Alpha Magnetic Spectrometer and an ExPRESS Logistics Carrier to the International Space Station. Mark Kelly served as the mission commander. STS-134 was expected to be the final space shuttle mission if STS-135 did not receive funding from Congress. However, in February 2011, NASA stated that STS-135 would fly "regardless" of the funding situation. STS-135, flown by Atlantis, took advantage of the processing for STS-335, the Launch On Need mission that would have been necessary if the STS-134 crew became stranded in orbit.
  Changes in the design of the main payload, AMS-02, as well as delays to STS-133, led to delays in the mission. The first launch attempt on 29 April 2011 was scrubbed at 12:20 pm by launch managers due to problems with two heaters on one of the orbiter's auxiliary power units. Endeavour launched successfully at 08:56:28 EDT on 16 May 2011, and landed for the final time on 1 June 2011.
context_section_description: On flight day 2, the crew of Endeavour completed several tasks in preparation for the docking on flight day 3. The first and most important of these tasks was surveying the shuttle's Thermal Protection System (TPS). The Orbiter Boom Sensor System (OBSS) was used to survey the wing leading edge and nose cone. The Shuttle Remote Manipulator System (SRMS, or Canadarm 1) was also used to look at the thermal tiles and blankets on and around the Orbital Maneuvering System (OMS) pods. After the survey was complete, the Express Logistics Carrier (ELC) 3 was grappled by the SRMS. While the survey was conducted by Greg Johnson and mission specialists Roberto Vittori and Greg Chamitoff, the rest of the crew prepared the orbiter for docking. This included installing tools such as a center-line camera in the Orbiter Docking System, along with various other sensors used to gauge distance and speed. Kelly and mission specialists Mike Fincke and Drew Feustel furthermore checked out the two spacesuits carried on Endeavour, in preparation for the mission's four planned spacewalks.
caption: Mike Fincke lifts heavy bags and floats freely inside Endeavour.
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