Russian astronaut Viktor Gorbatko (R) and Vietnamese cosmonaut Pham Tuan returned to the Earth in the “Union-37” spaceship on July 23, 1980 (Photo: VNA)

Vietnam mourns over Russian astronaut Viktor Gorbatko’s death

President Tran Dai Quang has conveyed his deep sympathy to Russian President Vladimir Putin over the death of Russian Hero, astronaut Viktor Gorbatko who joined Vietnamese heroic spaceman Pham Tuan on a flight to the space in 1980.