On September 12th, 1991, NASA captured strange extraterrestrial activity but has since kept it hidden, in this clip from Season 4, …
source
Ancient Aliens: NASA’s Untold Extraterrestrial Encounter (Season 4)
![](https://declassifiedufo.com/wp-content/uploads/2022/07/1658865973_maxresdefault.jpg)
On September 12th, 1991, NASA captured strange extraterrestrial activity but has since kept it hidden, in this clip from Season 4, …
source