August 22

On the 22nd in 1963, Joseph Albert Walker strapped himself into the cockpit of an X-15 aircraft and flew it to an altitude of 108 km thus becoming the first person to fly into outer space twice. He had previously flown the X-15 to an altitude of 106 km on July 19 of that year. This second flight to the rarefied atmosphere of outer space would be the last time anyone would fly a plane into outer space until 2004 when Mike Melvill flew Richard Branson’s Virgin Galactic’s SpaceShipOne to an altitude of 112 km.