The historic launch complex, situated about a half-mile (750 meters) from the Atlantic Ocean, was the departure point for 94 missions before Sunday.
Originally constructed in the 1960s for the Apollo moon program, pad 39A hosted 12 Saturn 5 blastoffs on test flights, all of the moon landing missions and the uncrewed launch of NASA’s Skylab space station from 1967 through 1973.
NASA’s fleet of space shuttles launched from the pad 82 times, including the first and last flights of the program in 1981 and 2011.