Alien races refer to hypothetical or fictional species that originate from planets other than Earth. These beings are often depicted in science fiction literature, movies, and games, showcasing a wide variety of physical forms, cultures, and technologies. Some popular examples include the Vulcans from Star Trek and the Wookiees from Star Wars. The concept of alien races raises questions about the possibility of life beyond our planet. Scientists search for extraterrestrial life through programs like SETI (Search for Extraterrestrial Intelligence) and explore planets and moons in our solar system, such as Mars and Europa, for signs of life.