The document discusses the question of whether vampires are real by examining the history of vampire legends around the world. It notes that vampire stories date back thousands of years to ancient civilizations like Sumeria, Egypt, Greece and Rome which had their own versions of blood-drinking creatures. Throughout history, various cultures from Australia to Asia have believed in different types of vampires. Some modern theories suggest that certain reported vampires may actually be aliens visiting from other planets. The document concludes that whether vampires exist depends on one's definition of vampires and which types one considers possible.