Shuttle Commander Mark Kelly's wife, U.S. If STS-134 had launched during Expedition 26, then Mark Kelly and Expedition 26 commander Scott Kelly would have become the first siblings (and twins) to fly in space at the same time. It was also originally scheduled to coincide with Expedition 26 before delays in the Space Shuttle launch schedule pushed it past that Expedition. STS-134 was planned to be the final regularly scheduled mission of the NASA Space Shuttle Program, but with the passing in 2011 of an appropriations bill authorizing the conversion of STS-335 to STS-135, this was no longer the case. In the spring of 2009, the Obama Administration included funds for the STS-134 mission in its proposed 2010 NASA budget. Bush had previously opposed any additional shuttle missions, as they could delay the transition to Project Constellation. It was amended and passed by the full Senate on 25 September 2008, passed by the House on 27 September 2008, and signed by President George W. Senate version of the NASA Authorization Act that was unanimously approved by the Senate Committee on Commerce, Science, and Transportation on 25 June 2008. The same mandate was included in the U.S. On 19 June 2008, the United States House of Representatives passed the NASA Authorization Act of 2008, giving NASA funding for one additional mission to "deliver science experiments to the station". The Space Shuttle had been scheduled to be retired from service after STS-133, but controversy over the cancellation of several International Space Station components, most notably the Alpha Magnetic Spectrometer, in order to meet deadlines for the retirement of the shuttle, caused the United States Government to consider ordering an additional mission. 7.17 1 June (Flight Day 17 – Re-entry and landing).7.15 30 May (Flight Day 15 – Undocking).7.4 19 May (Flight Day 4 – AMS-2 installation).7.3 18 May (Flight Day 3 – ISS rendezvous and ELC installation).7.2 17 May (Flight Day 2 – OBSS inspection).3.4 Sensor Test of Orion Rel-nav Risk Mitigation Detailed Test Objective kit. 3.3 Materials on International Space Station Experiment.Endeavour launched successfully at 08:56:28 EDT (12:56:28 UTC) on, and landed for the final time on 1 June 2011. 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 (APU). 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.Ĭhanges in the design of the main payload, AMS-02, as well as delays to STS-133, led to delays in the mission. However, in February 2011, NASA stated that STS-135 would fly "regardless" of the funding situation. STS-134 was expected to be the final Space Shuttle mission if STS-135 did not receive funding from Congress. Mark Kelly served as the mission commander. This flight delivered the Alpha Magnetic Spectrometer and an ExPRESS Logistics Carrier to the International Space Station. STS-134 ( ISS assembly flight ULF6) was the penultimate mission of NASA's Space Shuttle program and the 25th and last spaceflight of Space Shuttle Endeavour.
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