Ancient Aliens
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.

Season 16 · Episode 9 ·
The UFO Pioneers
In the 20th century, pioneering scientists, journalists and investigators defied convention and began documenting UFOs. Now, with incredible new UFO accounts coming to light, will their work finally culminate in undeniable proof of extraterrestrial visitation?
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Episode 9 of season 16 of Ancient Aliens: “The UFO Pioneers”. Aired 2021-03-05. Watch it online free on ZapFlix.