The Earth is the cradle of humanity, but mankind cannot stay in the cradle forever.-- Konstantin Tsiolkovsky
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Name: Konstantin Tsiolkovsky Type: Scientist Nationality: Russian Birth: September 5, 1857 Death: September 19, 1935 |
The Earth is the cradle of humanity, but mankind cannot stay in the cradle forever.-- Konstantin Tsiolkovsky
|
|
Name: Konstantin Tsiolkovsky Type: Scientist Nationality: Russian Birth: September 5, 1857 Death: September 19, 1935 |