A person who travels in space is commonly referred to as an "astronaut." The term "astronaut" is derived from the Greek words "astron" meaning "star" and "nautes" meaning "sailor," essentially translating to "star sailor." It is the widely used term in the United States to describe individuals who are trained to travel and work in space, particularly those associated with NASA (National Aeronautics and Space Administration). Other space agencies around the world may have different terms for their space travelers, such as "cosmonaut" in Russia or "taikonaut" in China. Nonetheless, "astronaut" is generally understood as the generic term for a person who ventures into space.