The simultaneous missions became one of the first instances of Soviet–American space cooperation: the Soviet Union released Luna 15's flight plan to ensure it would not collide with Apollo 11, though its exact mission was unknown.
Simultane misije postale su jedna od prvih instanci sovjetsko/američke svemirske suradnje, jer je SSSR objavio plan leta Lune 15 da bi se izbjegla mogućnost sudara s Apollo 11, iako je točna misija bila nepoznata.