Hermann Oberth published Die Rakete zu den Planetenraumen (The Rocket into Planetary Space), which contained the first serious proposal for a manned space station to appear in scientific literature rather than fiction. Oberth's study presented to the scientific community a broad treatise on the practicability and scientific value not only of manned permanent stations in orbit above the Earth, but also space flight in general. Oberth suggested a permanent station supplied by smaller rockets on a periodic basis and suggested rotation of the vehicle to produce an artificial gravity for the crew. Such a station, he said, could serve as a base for Earth observations, as a weather forecasting satellite, as a communications satellite, and as a refueling station for extraterrestrial vehicles launched from orbit.

In a discussion of the uses of an interplanetary rocket, Hermann Oberth proposed circumlunar flight to explore the hidden face of the moon and discussed the possibility of storing cryogenic fuels in space. A spacecraft could rendezvous and dock in earth orbit with a fuel capsule. When the spacecraft reached the vicinity of a planet, it would detach itself from the capsule and descend to the surface. On departure, the spacecraft would ascend and reconnect to its fuel supply for the return trip.

American test pilot astronaut 1959-1969. Member of first crew to rendezvous in space, and commander of first manned Apollo mission. Remembered both for practical jokes and uncompromising attention to detail. Flew 90 combat missions in the Korean War. 3 spaceflights, 12.3 days in space. Flew to orbit on Mercury 8 (1962), Gemini 6A, Apollo 7.

American test pilot astronaut 1959-1974. First American in space. Grounded on medical grounds during Gemini, but reinstated, becoming fifth person to walk on the moon. Millionaire entrepreneur on the side. 2 spaceflights, 9.0 days in space. Flew to orbit on Apollo 14 (1971).

Die Rakete zu den Planetenräume (The Rocket Into Interpanetary Space) by Hermann Oberth was published in Germany, and was the genesis for considerable discussion of rocket propulsion. The book would have a huge and life-changing impact on ten year old Wernher Von Braun.