Launch Complex 39 is a rocket launch site at the John F. Kennedy Space Center on Merritt Island in Florida, USA. The site and its collection of facilities were originally built for the Apollo program, and was later modified for the Space Shuttle program, before currently undergoing modifications to support launches of the SpaceX Falcon 9 and Falcon Heavy and the Space Launch System.Launch Complex 39 is composed of the two launch pads—39A and 39B—the Vehicle Assembly Building , the Crawlerway , the Orbiter Processing Facility buildings, the Launch Control Center , a news facility , and various logistical and operational support buildings.SpaceX leases Launch Pad 39A from NASA and will be modifying the pad in 2014 to support Falcon Heavy launches as early as 2015. NASA began modifying Launch Pad 39B in 2007 to accommodate the now defunct Project Constellation and is currently preparing Pad 39B for the Space Launch System with first launch scheduled for 2017.
