Robert Goddard’s assistant Henry Sachs (left), former student and fellow Clark University Physics professor Percy Roope (middle), and wife Esther Goddard who photographed and filmed much of her husband’s work. They stand with parts from the rocket — later named “Nell” — following the flight of March 16, 1926, at Aunt Effie’s (a distant relative of Robert Goddard’s) Ward Farm in Auburn, Mass. This test marked the world’s first successful launch of a liquid-propelled rocket. Courtesy of Clark University
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