The book The Problem of Space Travel (its original title was Das Problem der Befahrung des Weltraums – der Raketen Motor) by Herman Potočnik Noordung was a fundamental work for the first generation of those studying space travel. The book was published in 1928 by Carl Schmidt & Co in Berlin and had 188 pages. It contained 100 technical drawings and sketches by the author.

In his book, Potočnik determined outline solutions to the problems of conquering space. He discussed the problem of the rocket motor, proposed a solution for the take-off and landing of a spaceship, ways of manoeuvring in space, calculated the ideal position for placing a geostationary station, studied the principles of overcoming gravity, explored the possibilities of living on a geostationary station and analysed the possibility of human survival on a space station.

At the end of the book, he discussed the possibility of human travel towards the moon and to neighbouring planets, and warned of the possibility of the negative use of space technology for military purposes.

While solving technical problems, Herman Potočnik Noordung did not forget the medical, psychological, economic and philosophical questions that man faces when dealing with space travel.

In this work of 1928, Herman Potočnik Noordung wrote a key book with which mankind entered into the real conquest of space.