CAPE CANAVERAL, Fla. -- The crew of space shuttle Endeavour's STS-134 mission to the International Space Station participates in a news conference in the Press Site auditorium at NASA's Kennedy Space Center in Florida on landing day. From left are Public Affairs Officer Candrea Thomas, STS-134 Commander Mark Kelly, Pilot Greg H. Johnson; Mission Specialists Michael Finke, Roberto Vittori, astronaut with the European Space Agency and Andrew Feustel. Endeavour's final return from space completed the 16-day, 6.5-million-mile STS-134 mission. Main gear touchdown was at 2:34:51 a.m. EDT, followed by nose gear touchdown at 2:35:04 a.m., and wheelstop at 2:35:36 a.m. Endeavour and its crew delivered the Alpha Magnetic Spectrometer-2 (AMS) and the Express Logistics Carrier-3 (ELC-3) to the International Space Station. AMS will help researchers understand the origin of the universe and search for evidence of dark matter, strange matter and antimatter from the station. ELC-3 carried spare parts that will sustain station operations once the shuttles are retired from service. STS-134 was the 25th and final flight for Endeavour, which spent 299 days in space, orbited Earth 4,671 times and traveled 122,883,151 miles. Photo credit: NASA/Jim Grossmann KSC-2011-4244
