"Ancient Aliens" is a popular television series that explores the idea that extraterrestrial beings visited Earth in ancient times. The show suggests that these aliens influenced human civilization, technology, and culture, often citing ancient structures like the Pyramids of Giza and Stonehenge as evidence of advanced knowledge. The series features various experts, including historians and archaeologists, who discuss theories about ancient texts and artifacts. It raises questions about humanity's past and the possibility of contact with alien life, although many mainstream scientists and scholars criticize the show's claims as lacking solid evidence.