Ancient Aliens season 21 dives deep into the mysteries of our past, exploring theories that extraterrestrials have visited Earth throughout history. This season, experts and scientists examine new evidence and ancient texts to unravel secrets about alien encounters that may have shaped human civilization. From the pyramids of Egypt to the megaliths of Stonehenge, each episode takes viewers on an exciting journey across time and space to consider possibilities beyond our current understanding of history. Fans can expect thrilling insights and controversial theories that challenge conventional beliefs. Don't miss out—season 21 ended on March 28, 2025. Sign up for a reminder to catch all the action!Generated by ChatGPT4.