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Konstantin Tsiolkovsky Quotes

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Konstantin Tsiolkovsky
September 5, 1857 - September 19, 1935
Nationality: Russian
Category: Scientist
Subcategory: Russian Scientist

Man must at all costs overcome the Earth's gravity and have, in reserve, the space at least of the Solar System.


The Earth is the cradle of humanity, but mankind cannot stay in the cradle forever.


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