All about Aliens and Ufo's We believe in aliens

Ancient Cave Drawings; Carvings & Sculptures; Paintings & Tapestries, and Books & Illustrations found all over the planet.   Illustrations from a 12th century manuscript Annales Laurissenses, a book that documents historical and religious events. These illustrations refer to a well-documented 776 .

What is the History of Aliens ? Do you know since when the aliens have been visiting our planet? Do you know the time aliens first visited our planet? Do aliens have a history before mankind existed? Are aliens a 20th century .