• July 29, 1958 • January 2, 1959 • April 12, 1961 • May 25, 1961 • February 17, 1965 • July 16, 1969 • December 19, 1972 January 2, 1959 The Soviet Union launches Luna 1. The spacecraft transmits “unnatural” readings that are immediately classified by the Soviet Union and intercepted by the United States of America.