birth of America's space program. Popular concepts for a human presence in space Repeating the pattern he had established during his earlier career in Germany, von Braun – while directing military rocket development in the real world – continued to entertain his engineer-scientist's dream of a future in which rockets would be used for space exploration. However, he was no longer at risk of being fired. As American public opinion of Germans began to recover, von Braun found himself increasingly in a position to popularize his ideas. The 14 May 1950 headline of The Huntsville Times ("Dr. von Braun Says Rocket Flights Possible to Moon") might have marked the beginning of these efforts. Von Braun's ideas rode a publicity wave that was created by science fiction movies and stories. In 1952, von Braun first published his concept of a crewed space station in a Collier's Weekly magazine series of articles titled "Man Will Conquer Space Soon!". These articles were illustrated by the space artist Chesley Bonestell and were influential in spreading his ideas. Frequently, von Braun worked with fellow German-born space advocate and science writer Willy Ley to publish his concepts, which, unsurprisingly, were heavy on the engineering side and anticipated many technical aspects of space flight that later became reality. The space station (to be constructed using rockets with recoverable and reusable ascent stages) would be a toroid structure, with a diameter of ; this built on the concept of a rotating wheel-shaped station introduced in 1929 by Herman Potočnik in his book The Problem of Space Travel – The Rocket Motor. The space station would spin around a central docking nave to provide artificial gravity, and would be assembled in a two-hour, high-inclination Earth orbit allowing observation of essentially every point on Earth on at least a daily basis. The ultimate purpose of the space station would be to provide an assembly platform for crewed lunar expeditions. More than a decade later, the movie version of 2001: A Space Odyssey would draw heavily on the design concept in its visualization of an orbital space station. Von Braun envisioned these expeditions as very large-scale undertakings, with a total of 50 astronauts traveling in three huge spacecraft (two for crew, one primarily for cargo), each long and in diameter and driven by a rectangular array of 30 rocket propulsion engines. Upon arrival, astronauts would establish a permanent lunar base in