An astronaut or cosmonaut ( IPA: ) is a person trained to command, pilot, or serve as a crew member of a spacecraft. While generally reserved for professional space travelers, the term is sometimes applied to anyone who travels into space, including scientists, politicians, journalists, and tourists.
HK person whose family has moved abroad (i.e. alien territory) to secure passports, but who himself spends much of the year back in Hong Kong (i.e. the center of the earth) to make money. See also "Passport Widow"