1968: On 27 March 1968, Yury Alekseyevich Gagarin died.
Gagarin was a Soviet cosmonaut who on 12 April 1961 became the first person to travel into space. He orbited Earth once in 1 hour 29 minutes at a maximum altitude of 301 kilometres. He never went into space again but trained other cosmonauts and toured several other nations.
Gagarin was killed with another pilot in the crash of a two-seat jet aircraft while on a routine training flight.