What was Tsiolkovsky's primary interest?
Space exploration
Underwater exploration
Mountain climbing
Desert exploration
Answer
Space exploration was Tsiolkovsky's primary interest. He was a Russian scientist and engineer who is considered one of the founding fathers of astronautics. Tsiolkovsky developed Theory of the rocket equation, which is the basis for all modern rocketry. He also proposed the idea of using liquid propellants for rockets, which is now the standard practice. Tsiolkovsky's work laid the foundation for the development of space travel and exploration.
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