SCI-FI Staple is a term used to describe the common elements of science fiction. Robots, androids, aliens, Martians, spaceships, and UFOs are all popular components of this genre. Robots are mechanical beings with artificial intelligence, androids are human-like robots, aliens are creatures from other planets, Martians are inhabitants of the planet Mars, spaceships are vessels used for interplanetary travel, and UFOs are unidentified flying objects. All of these elements are staples of science fiction and have been featured in many books, films, and television shows.