The Space Mirror Memorial, which forms part of the larger Astronauts Memorial, is a National Memorial on the grounds of the John F. Kennedy Space Center Visitor Complex on Merritt Island, Florida. It is maintained by the Astronauts Memorial Foundation (AMF), whose offices are located in the NASA Center for Space Education next door to the Visitor Complex. The memorial was designed in 1987 by Holt Hinshaw Pfau Jones, and dedicated on May 9, 1991, to remember the lives of the men and women who have died in the various space programs of the United States, particularly those of NASA. The Astronauts Memorial has been designated by the U.S. Congress "as the national memorial to astronauts who die in the line of duty".

The North American X-15 is a hypersonic rocket-powered aircraft operated by the United States Air Force and the National Aeronautics and Space Administration (NASA) as part of the X-plane series of experimental aircraft. The X-15 set speed and altitude records in the 1960s, crossing the edge of outer space and returning with valuable data used in aircraft and spacecraft design. The X-15's highest speed, 4,520 miles per hour, was achieved on 3 October 1967, when William J. Knight flew at Mach 6.7 at an altitude of 102,100 feet (31,120 m), or 19.34 miles. This set the official world record for the highest speed ever recorded by a crewed, powered aircraft, which remains unbroken.