This category is for derelict satellites that are currently in orbit around the Sun. A derelict satellite is an artificial satellite that has been abandoned, neglected, or has become nonfunctional but is still in heliocentric orbit. The term is specific to manmade objects and may include satellites, spacecraft and spent upper stages (sometimes called cruise stages or flight platforms) used to transit payloads to non-terrestrial planets, asteroids or comets within the Solar System, whereas the term space debris covers a wider array of space debris more generally.