Konstantin Tsiolkovsky's Quotes

Born: 1970-01-01
Profession: Scientist
Nation: Russian
Biography of Konstantin Tsiolkovsky

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

Tags: Cannot, Earth, Humanity

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

Tags: Earth, Space, System

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