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Home
Authors
Konstantin Tsiolkovsky
Russian
Scientist
About the author
The Earth is the cradle of humanity, but mankind cannot stay in the cradle forever.
Konstantin Tsiolkovsky,
Russian
Scientist
#Earth
#Humanity
#Mankind
Man must at all costs overcome the Earth's gravity and have, in reserve, the space at least of the Solar System.
Konstantin Tsiolkovsky,
Russian
Scientist
#Earth
#Man
#Space
#Gravity