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| | Tsiolkovsky |
 | | Tsiolkovsky was certain that the future of human life will be in outer space, so he deceded that we must study the cosmos to pave the way for future generations. |
 | | He predicted the use of liquid oxygen and liquid hydrogen or liquid oxygen and kerosene for propulsion, spinning space stations for artificial gravity, mining asteroids for materials, space suits, the problems of eating, drinking, and sleeeping in weightlessness, and even closed cycle biological systems to provide food and oxygen for space colonies. |
 | | He truly beleived that it was the destiny of humankind to occupy the solar system and then to expand into the depth of the cosmos, living off the energy of the stars to create a cosmic civilization that would master nature, abolish natural catastrophes, and acheive happiness for all. |
| www.informatics.org /museum/tsiol.html (2013 words) |
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