Astronaut propulsion unit Astronaut propulsion unit An astronaut propulsion unit (or astronaut maneuvering unit) is used to move an astronaut relative to the spaceship during a spacewalk. The first astronaut propulsion unit was the Hand-Held Maneuvering Unit (HHMU) used on Gemini 4. The Hand-Held Maneuvering Unit was the EVA "zip" gun used by Ed White on the Gemini 4 mission in 1965. The hand-held gun held several pounds of nitrogen, and allowed limited movement around the Gemini spacecraft. It was also used by astronaut Michael Collins on the Gemini 10 mission in 1966. The United States Air Force (USAF) Astronaut Maneuvering Unit (AMU)
Chinese as a foreign language and Macau and has traditionally been the dominant language among most Overseas Chinese communities. A number of universities outside Hong Kong and Macau offer Cantonese within their Chinese-language departments as well, especially in the UK and North America. The interpretation of the Chinese language in the West began with some misunderstandings. Since the earliest appearance of Chinese characters in the West, the belief that written Chinese was ideographic prevailed. Such a belief led to Athanasius Kircher's conjecture that Chinese characters were derived from the Egyptian hieroglyphs, China being a colony of Egypt. John Webb, the British architect, went a step