Chief of the Astronaut Office procedures, and selection and conduct of specific experiments for each flight. Since the Shuttle era, the Chief of the Astronaut Office often returns to active duty in the Office once their term is complete. The Chief is currently responsible for managing Astronaut Office resources and operations, and helps develop astronaut flight crew operation concepts and crew assignments for future spaceflight missions. Chief of the Astronaut Office The Chief of the Astronaut Office is the most senior leadership position for active astronauts at the National Aeronautics and Space Administration (NASA). The Chief Astronaut serves as head of the NASA Astronaut Corps
Chinese as a foreign language prolific Chinese writer. With his wide command of the language, Ricci impressed the Chinese literati and was accepted as one of them, much to the advantage of his missionary work. Several scientific works he authored or co-authored were collected in the "Siku Quanshu", the imperial collection of Chinese classics. Some of his religious works were listed in the collection's bibliography, but not collected. Ricci and Ruggieri, with the help of the Chinese Jesuit Lay Brother Sebastiano Fernandez (also spelled Fernandes; 1562–1621), are thought to have created the first Portuguese-Chinese dictionary some time between 1583 and 1588. Later, while travelling on