STS-119 (ISS assembly flight 15A) was a space shuttle mission to the International Space Station (ISS) which was flown by Space Shuttle Discovery during March 2009. It delivered and assembled the fourth starboard Integrated Truss Segment (S6), and the fourth set of solar arrays and batteries to the station. The launch took place on 15 March 2009, at 19:43 EDT.
STS-119 delivered the S6 solar arrays to the space station, completing the construction of the Integrated Truss Structure. STS-119 also carried several experiments, including the Shuttle Ionospheric Modification with Pulsed Local EXhaust (SIMPLEX), Shuttle Exhaust Ion Turbulence Experiments (SEITE), and Maui Analysis of Upper Atmospheric Injections (MAUI). STS-119 was also used for the "Boundary Layer Transition Detailed Test Objective" experiment.
The shape of the STS-119/15A patch comes from the shape of a solar array viewed at an angle. The International Space Station (ISS), which is the destination of the mission, is placed accordingly in the center of the patch just below the gold astronaut symbol. The gold solar array of the ISS highlights the main cargo and task of STS-119/15A -- the installation of the S6 truss segment and deployment of S6's solar arrays, the last to be delivered to the ISS. The surnames of the crew members are denoted on the outer band of the patch. The 17 white stars on the patch represent, in the crew's words, "the enormous sacrifice the crews of Apollo 1, Challenger, and Columbia have given to our space program." The U.S. flag flowing into the space shuttle signifies the support the people of the United States have given our space program over the years, along with pride the U.S. astronauts have in representing the United States on this mission.
The original version differs slightly from the STS-119 patch that was later approved. "Wakata" was moved to the bottom, "15A" was removed, and "119" was made more prominant.
