Astronaut youngest person to fly in space is Gherman Titov, who was 25 years old when he flew Vostok 2. (Titov was also the first person to suffer space sickness). The oldest person who has flown in space is John Glenn, who was 77 when he flew on STS-95. 438 days is the longest time spent in space, by Russian Valeri Polyakov. As of 2006, the most spaceflights by an individual astronaut is seven, a record held by both Jerry L. Ross and Franklin Chang-Diaz. The farthest distance from Earth an astronaut has traveled was , when Jim Lovell, Jack Swigert,
Chinese as a foreign language using intonation whilst retaining the correct tones. Chinese courses have been blooming internationally since 2000 at every level of education. Still, in most of the Western universities, the study of the Chinese language is only a part of Chinese Studies or sinology, instead of an independent discipline. The teaching of Chinese as a foreign language is known as "duiwai hanyu jiaoxue" (). The Confucius Institute, supervised by Hanban (the National Office For Teaching Chinese as a Foreign Language), promotes the Chinese language in the West and other parts of the world. The People's Republic of China began to accept foreign