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 in 2001, while the later has not been found so far—Ricci made the transcription system developed in 1598, and in 1626 it was finally published, with minor modifications, by another Jesuit Nicolas Trigault in a guide for new Jesuit missionaries. The system continued to be in wide use throughout the 17th and 18th century. It can be seen in several Romanized Chinese texts (prepared mostly by Michael Boym and his Chinese collaborators) that appeared in Athanasius Kircher's "China Illustrata". The earliest Chinese grammars were produced by the Spanish Dominican missionaries. The earliest surviving one is by Francisco Varo (1627–1687). His