What did the Robertson Panel conclude about evidence for extraterrestrial visitors?

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Declassified U.S. military video of unidentified aerial phenomena (UAP) — unidentified flying object Learn about an unidentified aerial phenomena (UAP) sighting from this video (known as the Gimbal video) captured by fighter pilots associated with the USS Theodore Roosevelt carrier strike group. The video shows instrument detections of unknown aerial objects, which the pilots were unable to identify, off the East Coast of the United States, 2014–15.

The Robertson Panel, convened by the Central Intelligence Agency in 1953 to investigate unidentified flying objects, concluded that there was no evidence to support the extraterrestrial hypothesis (ETH).12

Specifically, the panel determined that:
* Approximately 90 percent of reported sightings could be attributed to common astronomical, meteorological, or earthly phenomena, such as planets, stars, meteors, auroras, birds, or aircraft.1
* The sightings posed no obvious security threat to the United States.12
* There was no evidence within the records of Project Blue Book to prove the existence of extraterrestrial visitors.12

The panel’s findings were partially kept classified until 1979, a delay that contributed to public suspicion regarding a government cover-up.12