CAPE CANAVERAL, Fla. - At NASA's Kennedy Space Center in Florida, a payload canister arrives at Orbiter Processing Facility-3 in preparation for the removal of the multi-purpose logistics module Leonardo and an ammonia tank assembly from space shuttle Discovery's payload bay. Discovery landed on Runway 33 at Kennedy's Shuttle Landing Facility at 9:08 a.m. EDT April 20 after 15 days in space, completing the more than 6.2-million-mile STS-131 mission on orbit 238. The seven-member STS-131 crew carried the multi-purpose logistics module Leonardo, filled with supplies, a new crew sleeping quarters and science racks that were transferred to the International Space Station's laboratories. Leonardo now will be modified into a permanent multi-purpose module, or PMM, and left aboard the station on space shuttle Discovery's STS-133 mission, targeted for launch Sept. 16. For information on the STS-131 mission, visit http:__www.nasa.gov_mission_pages_shuttle_shuttlemissions_sts131_index.html. For information on the STS-133 mission, visit http:__www.nasa.gov_mission_pages_shuttle_shuttlemissions_sts133_index.html. Photo credit: NASA_Jack Pfaller