"Valentin Vasilyevich Bondarenko (Russian: Валентин Васильевич Бондаренко; Ukrainian: Валентин Васильович Бондаренко; 16 February 1937 – 23 March 1961) was a Soviet fighter pilot selected in 1960 for training as a cosmonaut. He died as the result of burns sustained in a fire during a 15-day low-pressure endurance experiment in Moscow. The Soviet government concealed the death, along with Bondarenko's membership in the cosmonaut corps, until 1980. A crater on the Moon's far side is named after him." - (en.wikipedia.org 01.03.2024)
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