Page 51 - @ccess 2 Reader´s Book
P. 51

In 1903, a Russian teacher named Konstantin Tsiolkovsky
            wrote a paper describing the idea of liquid-fuel rockets.
            In 1926, American scientist Robert Goddard flew the first
            liquid-fuel rocket. German scientists led by Hermann Oberth
            improved liquid-fuel rockets.

            During World War II, Germany used rockets to bomb other
            countries. In 1957, the Soviet Union used a rocket to launch
            the first satellite. In 1961, Soviet cosmonaut Yuri Gagarin
            rode in a rocket to become the first person in space.
            In 1969, the United States launched the first men to land
            on the Moon - Neil Armstrong and Buzz Aldrin - using a
            Saturn V rocket.











































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