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Overview
Did intelligent beings from outer space visit Earth thousands of years ago? From the age of the dinosaurs to ancient Egypt, from early cave drawings to continued mass sightings in the US, each episode gives historic depth to the questions, speculations, provocative controversies, first-hand accounts and grounded theories surrounding this age old debate.
Score Distribution
Score Distribution
84.3/100
Very Good
90-100
42%(1235)
80-89
28%(824)
70-79
18%(529)
60-69
8%(235)
50-59
3%(88)
0-49
1%(29)
Total Reviews: 2,940Based on user ratings
Details
- Status
- Returning Series
- Seasons & Episodes
- 21 seasons,267 episodes
- Episode Runtime
- 42, 60 minutes
- Release Date
- April 20, 2010
- Languages
- English
- Created By
- Production
- Production Countries
- United States of America
- Networks
- History
- Type
- Documentary
