Chief of the Astronaut Office 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 and is the principal advisor to the NASA Administrator on astronaut training and operations. When Deke Slayton was grounded from the Mercury Seven due to a heart condition, he took on the position of Coordinator of Astronaut Activities and informally held the title of "chief astronaut". In this role, he held responsibility for the operation of the astronaut office. The position
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