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Friedrich Tsander was born in Riga, Livonia, Russian Empire, in 1887.
Gaston and Albert Tissandier
Gaston Tissandier pushed the limits of altitude in a balloon in 1875.
Gen. Benjamin O. Davis Jr. and Gen. Ira Eaker
Gen. Benjamin O. Davis Jr. (center) escorts Gen. Ira Eaker (second from left) on an inspection tour of Ramitelli Airfield.
Ground crews of the 332nd Fighter Group
Ground crews of the 332nd Fighter Group mount a drop tank on a P-51.
Group for the Study of Reactive Motion (GIRD)
The first Soviet liquid-fuel rocket, GIRD-X in 1933. At far left is Sergei P. Korolev, later chief designer of the Soviet space program.
Guion “Guy” Bluford became the first African American to fly in the Space Shuttle Program.
Harry Guggenheim, Goddard, and Lindbergh at Rocket Launch Tower
Harry Guggenheim, Robert Goddard, and Charles Lindbergh (second, third, and fourth from left), Roswell, New Mexico, September 23, 1935.
Hermann "Noordung" Potočnik
Hermann "Noordung" Potočnik, born in Pola, Austria-Hungary, in 1892, published The Problem of Space Travel: The Rocket Motor in 1928–29.
Ganswindt was perhaps the earliest person to propose a feasible means of spaceflight in print, but he was largely forgotten until the 1920s.