1935 - Emilio Herrera Linares from Spain designed and made the first full-pressured astronaut suit, called the escafandra estratonáutica. The Russians then used a model of Herrera's suit when first flying into space of which the Americans would then later adopt when creating their own space program.
1952 - Wernher von Braun discusses the technical details of a manned exploration of Mars in Das Marsprojekt.
1953 - Colliers Magazine publishes a series of articles on man's future in space, igniting the interest of people around the world. The series includes numerous articles by Ley and von Braun, illustrated by Chesley Bonestell.