Labels:text | font | document | paper | black and white | screenshot OCR: (1857-1935) KONSTANTIN EDUARDOVICH TSIOLKOVSKY was a Russian scientist and author who investigated the use of rockets for spaceflight from the 1880s onward. He was the first person to propose the use of liquid propellants for rockets, and his idea was put into practice in 1926 when American rocket pioneer Robert Goddard (1882-1945) launched the first liquid-propellant rocket. Tsiolkovsky's other contributions to space travel included calculating the necessary speed and amount of fuel needed for a rocket to escape the gravitational pull of the Earth. He also proposed the idea of the multistage rocket. 1857 Born September 17 in Izhevskoye, Russia. He does not attend school but teaches himself at home. 1871 He concentrates on mathematics and physics. He is fascinated by hot-air balloons and b ...
