Xenos, often referred to as aliens, are hypothetical or fictional beings from outer space. They are commonly depicted in science fiction as intelligent life forms that may possess advanced technology and different biological characteristics compared to humans. The concept of xenos raises questions about the possibility of life beyond Earth and the nature of such beings. In popular culture, xenos appear in various media, including movies, books, and video games. They are frequently portrayed in conflict with humans or as allies, reflecting humanity's curiosity and fears about the unknown. The study of xenos is often linked to the field of astrobiology, which explores the potential for life on other planets.