Soyuz 15 carried Lev Dyomin into orbit in 1974, marking a historic milestone as he became the oldest cosmonaut to travel into space at the age of 48. During this mission, he also secured his place in history as the first grandfather to leave Earth's atmosphere, representing the Soviet Union during the height of the space race.
Military and Technical Training
Born in Moscow in 1926, Lev Dyomin navigated a career defined by technical precision and aerial expertise. His foundational training occurred at the Borisoglebsk Higher Aviators School and the Tambov Higher Military Aviation Engineering School. He later advanced his academic credentials by attending the Zhukovsky Air Force Engineering Academy between 1951 and 1956, where he earned a doctoral degree in engineering. His professional progression within the Soviet Air Force eventually culminated in the rank of colonel.
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The Soyuz 15 mission served as the primary highlight of his career as an astronaut. The flight was designed to dock with the Salyut 3 space station, though the maneuver proved unsuccessful. Despite this outcome, Dyomin remained active within the Soviet space program until his departure in 1982. Following this transition, he focused his professional attention on the field of deep-sea research, applying his engineering background to underwater exploration.
Legacy and Recognition
Beyond his duties as a pilot and engineer, Dyomin was a dedicated philatelist. His service to the state earned him numerous accolades, including the Hero of the Soviet Union, the Order of Lenin, and the Order of the Red Banner of Labour. He also received the Medal 'For Battle Merit,' the Medal 'For Impeccable Service' (1st class), and various jubilee medals marking the anniversaries of the Soviet Armed Forces. Between 1977 and 1988, he served as a president in his field. Dyomin died in 1998 at Zvyozdny Gorodok.
Fast facts
- Born: 1926, Moscow
- Died: 1998, Zvyozdny Gorodok
- Military Rank: Colonel
- Spaceflight: Soyuz 15 (1974)
- Occupations: Astronaut, engineer, aircraft pilot, philatelist
- Citizenship: Soviet Union
Questions readers ask
What record did Lev Dyomin set on the Soyuz 15 mission?
At 48 years old, he was the oldest cosmonaut at the time and the first grandfather to travel into space.
What was the objective of his spaceflight?
The mission was intended to achieve a docking with the Salyut 3 space station, but the operation failed.
Achievements
- Educated at Borisoglebsk Higher Aviators School, Tambov Higher Military Aviation Engineering School and Zhukovsky Air Force Engineering Academy
- Worked as engineer, astronaut and aircraft pilot


