For thousands of years, people have held the belief that everyday objects can possess hidden energy. Talismans are seen as providing protection, good fortune, and some are even thought to embody a higher power. Could it be that what fuels our faith in talismans is not superstition, but a real connection to something beyond our world?

"Ancient Aliens" is looking at alien petroglyphs around the world; from strange, human-like figures to flying craft and carvings of what appear to be astronauts...