An alien body refers to a non-human or extraterrestrial being, often depicted in science fiction movies and literature. It can also refer to an unidentified flying object (UFO) that is believed to have come from another planet or galaxy. The term "alien" is used to describe any entity that is perceived as strange or foreign to the observer. In popular culture, aliens are often depicted with distinctive features such as large heads, big eyes, and elongated limbs.