Between 1966 and 1967, NASA sent five LunarOrbiterspacecraft to the moon to capture images before the arrival of Apollo 11, which landed on the lunar suface July 20, 1969.
As the pair of probes took their final plunge, Nasa's Lunar Reconnaissance Orbiter (LRO) had been manoeuvred into the right place to see the spacecraft slam into an unnamed 2, 500m mountain.