| Birth Day | January 1, 1956 |
| Birth Place | Russia |
| Sergei Avdeyev age | 68 YEARS OLD |
| Birth Sign | Capricorn |
Retired cosmonaut who at one point held the record for cumulative time in space.
He graduated from Moscow Physics-Engineering Institute.
He has served three times on the Mir Space Station and spent 747 days in Earth's orbit.
He married and had two children.
He was a cosmonaut like Yuri Gagarin.
