SpaceX launched the Dragon spacecraft on their eleventh operational cargo delivery mission to the International Space Station. The flight was conducted under the Commercial Resupply Services contract with NASA. This is the first reflight of a reused Dragon spacecraft. This Dragon capsule first flew on CRS-4.
The Full Thrust variants first stage includes all systems necessary for an operational re-use of stages while the second stage is operated as an expendable rocket stage.See Falcon Details
The first stage of the Falcon 9 rocket landed at LZ-1.Result: Successful Return to Launch Site landing at Landing Zone 1.
This was the first dragon vehicle to be used for more than one mission. This capsule flew on CRS-4 which carried SpaceX's first living payload in the form of 20 mice. It also flew on CRS-11.Dragon 1 Details
Space Exploration Technologies Corp., known as SpaceX, is an American aerospace manufacturer and space transport services company headquartered in Hawthorne, California. It was founded in 2002 by entrepreneur Elon Musk with the goal of reducing space transportation costs and enabling the colonization of Mars. SpaceX operates from many pads, on the East Coast of the US they operate from SLC-40 at Cape Canaveral Space Force Station and historic LC-39A at Kennedy Space Center. They also operate from SLC-4E at Vandenberg Space Force Base, California, usually for polar launches. Another launch site is being developed at Boca Chica, Texas.INFO WIKI