But the new report suggests that the public’s belief that the government is hiding what it knows will probably continue.
In the 1960s, secret test flights of advanced government spy planes generated U.F.O. sightings. More recently, government and commercial drones, new kinds of satellites and errant weather balloons have led to a renaissance in unusual observations.
But, according to a new report, none of these sightings were of alien spacecraft.
The new congressionally mandated Pentagon report found no evidence that the government was covering up knowledge of extraterrestrial technology and said there was no evidence that any U.F.O. sightings represented alien visitation to Earth.
The 63-page document is the most sweeping rebuttal the Pentagon has issued in recent years to counter claims that it has information on extraterrestrial visits or technology. But amid widespread distrust of the government, the report is unlikely to calm a growing obsession with aliens.
Maj. Gen. Patrick Ryder, a Defense Department spokesman, said the Pentagon approached the report with an open mind and no preconceived notions, but simply found no evidence to back up claims of secret programs, hidden alien technology or anything else extraterrestrial.
“All investigative efforts, at all levels of classification, concluded that most sightings were ordinary objects and phenomena and the result of misidentification,” General Ryder said in a statement.
While many reports of what the government now calls Unidentified Anomalous Phenomena remain unsolved, the new document states plainly there is nothing to see. The Pentagon’s All-domain Anomaly Resolution Office concluded that if better quality data were available, “most of these cases also could be identified and resolved as ordinary objects or phenomena.”