A spacefarer is a person who travels in space. There are several synonyms for the word spacefarer, including astronaut, cosmonaut, and taikonaut. An astronaut is a person trained by a space agency to pilot, navigate, and perform tasks in space. A cosmonaut is a similar term used for a Russian person who has been trained for space travel. Taikonaut is a word coined by the Chinese media to refer to a person trained for space travel in China. The term space traveler is also sometimes used as a synonym for the word spacefarer. Regardless of the term used, spacefarers are on the cutting edge of space exploration, pushing the limits of human knowledge and understanding of our universe.