TV Series · 2009 · TV Series · 2000s
Ancient Aliens
Scored from 158 calibrated IMDb reviewers, each re-centered on their own rating baseline before the title is ranked. Cohort: TV Series · 2000s (1,360 peers).
Summary
A documentary television series that explores the ancient astronaut hypothesis, the idea that extraterrestrial beings visited Earth in the distant past and influenced early human civilizations. Each episode examines historical sites, artifacts, religious texts, and unexplained phenomena, featuring commentary from proponents of the theory who argue these mysteries point to alien involvement in human history.
Ancient Aliens (2009) is a television series IMDb files under the history genre.
The calibrated figure is built from 158 reviewers whose rating history varies enough to place their own average. A broader pool of 170 reviewers with two or more reviews feeds the raw-average track instead. The cohort it is ranked inside is 2000s television series — 1,360 of them. Rotten Tomatoes carries a separate audience for the same title, 3 of whom clear the calibration test.
How the score was built
We compare the reviewers of this title against every other title those same people reviewed. Each review is scored relative to the reviewer's own baseline — a 7/10 from a hard grader sits well above their average, while a 7/10 from a generous grader sits below theirs. Every reviewer then counts the same, so the result is a calibrated consensus rather than a raw average.
- Global percentile
- Where Ancient Aliens lands against every title we rank.
- In-cohort percentile
- The same comparison narrowed to its cohort — titles of the same format released in the same decade. A 1970s film is judged against 1970s films, not against last year's streaming series. Ranked against TV Series · 2000s (1,360 titles).
- AI-adjusted percentile
- The same reviewer-normalized score, corrected for how much confidence the sample supports: thin samples are pulled toward the corpus average. Each title keeps the share n / (n + 53) of its measured distance from the average, where n is its calibrated-reviewer count, and the result is ranked on the same scale as the global percentile.53 is the median sample size across everything we rank. Here n is 158.
Cohort: TV Series · 2000s
