United States Astronaut Badge is used for USAF Mission Specialists who have completed training but not a mission and are not otherwise aeronautically rated as a USAF pilot, RPA pilot, combat systems officer, air battle manager, or flight surgeon. In 2007, the U.S. Air Force announced the opening of astronaut mission specialists positions to enlisted personnel who met certain eligibility requirements. These requirements include: No enlisted astronaut badges are yet known to have been issued. The gold astronaut device is issued by the U.S. Army to Army aviators, flight surgeons, and aircrew members that qualify as astronauts. The astronaut device is a gold shooting
Chinese as a foreign language Chinese as a foreign language Chinese as a foreign or second language is the study of the Chinese varieties by non-native speakers. Increased interest in China from those outside has led to a corresponding interest in the study of Standard Chinese ("Mandarin") as a foreign language, the official language of mainland China and Taiwan. However, the teaching of Chinese both within and outside China is not a recent phenomenon. Westerners began learning different Chinese varieties in the 16th century. Within China, Mandarin became the official language in the early 20th century. Mandarin also became the official language of Taiwan when