This was the third flight for the uncrewed Dragon cargo spacecaft and the first SpaceX mission under their Commercial Resupply Services contract with NASA. Dragon delivered various cargo to the staion, and returned after being berthed to the station for 17 days. The spacecraft landed in the Pacific Ocean and was recovered by SpaceX.
The Falcon 9 v1.0 first stage was used on the first five Falcon 9 launches, and powered by nine SpaceX Merlin 1C rocket engines arranged in a 3x3 pattern.See Falcon Details
First Commercial Resupply Services (CRS) mission for NASA, first non-demo mission. Falcon 9 rocket suffered a partial engine failure during launch but was able to deliver Dragon into orbit. However, a secondary payload did not reach its correct orbit.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 has many pads, on the East Coast of the US they own SLC-40 at Cape Canaveral and LC-39A at the Kennedy Space Center for their lower inclination launches. They also own SLC-4E at Vandenberg, California for their high inclination launches. Another site is also being developed at Boca Chica, Texas.INFO WIKI