UFO Sightings Explained: What Are UAPs and What Do Officials Say?
Explainer · 5 min read
Interest in UFOs has exploded in recent years, driven by government hearings, leaked videos and social media. But what do the terms mean, and what have official investigations actually concluded? Here is a calm look.
UFO vs. UAP
UFO means "unidentified flying object." It is a literal term: something in the sky that the observer cannot identify. It does not mean "alien spacecraft." Official bodies now prefer the term UAP, "unidentified anomalous phenomena," which also covers objects seen in space or underwater, and avoids the alien connotation.
What has the US government said?
2021: A preliminary assessment by the Office of the Director of National Intelligence reviewed 144 reports from US military sources between 2004 and 2021. Only one could be explained with high confidence (a large deflating balloon). The rest lacked enough data to reach a conclusion. The report did not claim they were extraterrestrial.
2022: The Pentagon created the All-domain Anomaly Resolution Office (AARO) to collect and analyze reports.
2024: AARO published a historical review of government UAP investigations and stated that it found no verifiable evidence of extraterrestrial technology.
It is fair to say that some cases remain unexplained, but "unexplained" simply means "not enough data," not "alien."
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The most common explanations
Balloons and drones. Weather balloons, party balloons and increasingly drones are common culprits, especially at night.
Aircraft and satellites. Lights from planes viewed head-on, or satellite trains such as Starlink, are often reported as "strange lines of lights."
Planets and stars. Venus, Jupiter and bright stars are frequently misidentified, particularly when they appear to "dance" because of atmospheric turbulence.
Camera and sensor artifacts. Lens flares, parallax and compression effects can make an ordinary object look like it is moving at impossible speeds.
Hoaxes and misattributed videos. A large part of viral UFO footage is edited, mislabeled or computer-generated.
Why witnesses can be sincere and still wrong
Judging the distance, size and speed of a light in the night sky is surprisingly hard. With no reference point, the brain guesses. This is why experts rely on instruments, multiple sensors and recorded data rather than eyewitness accounts alone.
How to evaluate a UFO claim
Is there raw data, not just a short clip?
Did more than one independent source record it?
Have ordinary explanations been ruled out by an expert?
Is the source named and checkable?
Most viral claims fail at the first question. Our article on the 2029 alien rumors applies the same checklist.