Astronaut into space, Yuri Gagarin in 1961, they chose a term which anglicizes to "cosmonaut". In English-speaking nations, a professional space traveler is called an "astronaut". The term derives from the Greek words "ástron" (ἄστρον), meaning "star", and "nautes" (ναύτης), meaning "sailor". The first known use of the term "astronaut" in the modern sense was by Neil R. Jones in his 1930 short story "The Death's Head Meteor". The word itself had been known earlier; for example, in Percy Greg's 1880 book "Across the Zodiac", "astronaut" referred to a spacecraft. In "Les Navigateurs de l'Infini" (1925) by J.-H. Rosny aîné, the
Chinese as a foreign language (one year and about 8 months), to learn Mandarin. A quote attributed to William Milne, Morrison's colleague, goes that learning Chinese is Several major difficulties stand out: While English uses an alphabet, Chinese uses "hanzi", or Chinese characters, as its writing system. The "Kangxi dictionary" contains 47,035 characters (). However, most of the characters contained there are archaic and obscure. The Chart of Common Characters of Modern Chinese (), promulgated in People's Republic of China, lists 2,500 common characters and 1,000 less-than-common characters, while the Chart of Generally Utilized Characters of Modern Chinese () lists 7,000 characters, including the 3,500