the launch complex 39 (lc-39) is a rocket launch facility of ksc. the site was originally made for the apollo program. later, it was modified for the space shuttle program. , only pad 39a is in use to launch spacex's falcon 9 and falcon heavy. pad 39b is modifying for nasa's space launch system. the pad 39c was added in 2015 for small rocket launches, although it is not in use.