This is a list of spaceflight related events which occurred in 1956. * Manned orbital spaceflight studied * First nuclear warhead launched on a missile * Atlas, Titan, Redstone programs going strong * China begins missile development * The race to launch a satellite heats up * Japan's first substantial sounding rocket launched, the Kappa-1, but nation wouldn't go to space until the Kappa-8 in 1960 * First spaceflight launches from Canadian facility at Churchill