Revisit the most compelling mysteries explored over the past 15 years of "Ancient Aliens." Experts like Giorgio Tsoukalos, David Childress, William Henry, and Jason Martell engage in conversations around Ancient Astronaut Theory in each episode.
2002
1979
1989
1974
1966
1997
1992
1980
2009
2008
2018
2022
1996
1957
1984
1993
2006
1999
2010
