Listen to the biggest hits from Georges Lannes, including and more on Slacker Radio.
A key advance was the invention of the first liquid-fuelled rocket in 1926 by the American Robert Goddard in Auburn, Massachusetts. Goddard is considered to be one of the fathers of the modern rocket era.
[ 97 ] NASA's first four manned spaceflight projects were Mercury, Gemini, Apollo, and Skylab. As the first U.S. manned spaceflight project, Project Mercury-which included two manned suborbital flights and four orbital flights-fostered Project Apollo and fathered Project Gemini.. The second manned spaceflight project initiated was the Apollo manned lunar exploration program.