The first comprehensive encyclopedic dictionary of astronautics in the French language, published by Larousse in 1963. In 319 pages, Thomas de Galiana defines the scientific and technical vocabulary of space exploration, from fundamental physics to contemporary Soviet and American programs. Prefaced by astronomer Paul Muller of the Paris Observatory, the work covers rocket and propulsion terminology, space programs (Vostok, Mercury, Pioneer, Luna), orbital mechanics, space biology, and planetary geography, lavishly illustrated with photographs and technical diagrams.