Space Shuttle Challenger disaster buried in Rest Lawn Memorial Park in Lake City, South Carolina. Christa McAuliffe's remains are buried at Calvary Cemetery in her hometown of Concord, New Hampshire. Gregory Jarvis was cremated, and his ashes scattered in the Pacific Ocean. Unidentified crew remains were buried communally at the Space Shuttle "Challenger" Memorial in Arlington on May 20, 1986. As a result of the disaster, several National Reconnaissance Office (NRO) satellites that only the shuttle could launch were grounded because of the accident. This is a dilemma NRO had feared since the 1970s when the shuttle was designated as the United States' primary
Space Shuttle program from the back of a specially modified Boeing 747, only for initial atmospheric landing tests (ALT). "Enterprise"'s first test flight was on February 18, 1977, only five years after the Shuttle program was formally initiated; leading to the launch of the first space-worthy shuttle "Columbia" on April 12, 1981 on STS-1. The Space Shuttle program finished with its last mission, STS-135 flown by "Atlantis", in July 2011, retiring the final Shuttle in the fleet. The Space Shuttle program formally ended on August 31, 2011. Before the Apollo 11 moon landing in 1969, NASA began early studies of space shuttle designs.