Checked 18 August 2026
We checked
Claim: Aliens are living on Earth
No — there is no evidence aliens are living on Earth; NASA's astrobiology program and independent UAP studies have found nothing supporting extraterrestrial presence or visitation despite decades of investigation. This is a settled finding, not an open question awaiting more data.
Claim: Aliens are living on Earth
No — the evidence is against itNASA's own astrobiology program states plainly that no life beyond Earth has ever been found and that there is no evidence alien life has ever visited the planet, and the agency's independent UAP study team likewise reported seeing no evidence that any anomalous sightings are extraterrestrial in origin, with no U.S. government investigation ever producing evidence of alien visitation despite decades of official study.
ReferencesEarly cultures such as the Sumerians, Egyptians and Greeks told stories of sky-gods descending to interact with humanity, later read by some as an early version of the alien-visitor idea.
Kenneth Arnold's sighting of nine unidentified fast-moving objects, followed shortly by the Roswell incident, is treated as the starting point of modern American UFO culture and fear of alien visitation.
Cold War anxiety and films like Earth vs. the Flying Saucers turned flying-saucer sightings into a mass cultural phenomenon, with speculation that visitors might be hidden among the population in plain sight.
The television series The X-Files built a long-running mythology around aliens taking human form and a government conspiracy to hide it, cementing the specific "aliens living among us disguised as people" version of the belief in pop culture.
The U.S. Air Force publicly stated the Roswell wreckage was tied to a secret defense project and that the rumored 'aliens' were dummies used in parachute tests, a claim that did not stop the belief from persisting in American folklore.
There is no single traceable source for this belief; it is a long-running cultural idea rather than one claim from one document. Its roots run through ancient myths of sky-gods, into 19th-century "cosmic pluralism" debates about life on other worlds, and then into 20th-century American UFO culture after the 1947 Kenneth Arnold sighting and the Roswell incident, which the U.S. Air Force later said involved a secret surveillance project rather than crashed extraterrestrials. The specific, modern version — that aliens themselves, not just their craft, walk among us disguised as humans — was popularized largely through Cold War-era science fiction and later television series built on government-cover-up plots.
ReferencesReviewed 1 October 2026 — nothing had changed.
Claims on this page are re-checked periodically; any change of finding is reviewed by a person before it appears here.