Can Science Explain Every UFO Report?

Term: Resolved case: a UFO or UAP report that investigators matched to a known cause, such as a balloon, satellite, or aircraft.

Term: Unresolved case: a report investigators could not explain, usually because there was not enough data to reach a conclusion.

Can Science Explain Every UFO Report?

No. Most UFO reports do get explained. Project Blue Book resolved about 94.5 percent of its cases and left 5.5 percent unidentified. AARO, the Pentagon's current office, closed most recent cases as balloons, drones, birds, or aircraft, but it has also placed a portion of cases into an active archive because there was not enough data to reach a conclusion. Science can explain most reports. It has not explained all of them.

What the record shows

Project Blue Book examined 12,618 reports between 1952 and 1969 and left 701 of them, about 5.5 percent, officially unidentified. AARO's more recent reviews have resolved the large majority of new reports as balloons, drones, birds, satellites, or aircraft, and a smaller share as objects lacking enough data to reach any conclusion. I cover these numbers in more depth in an earlier post on misidentification.

Why most reports have ordinary explanations

People are not trained to judge distance, size, and speed in the night sky. Planets, satellites, weather balloons, and drones commonly produce reports that look strange to an untrained eye. Investigators with the right tools and enough time can usually match a report to a known cause.

Why some reports resist explanation

A minority of cases include radar tracks, gun-camera video, multiple trained witnesses, or physical traces on the ground, and those cases are harder to dismiss. AARO's own reports have flagged a number of cases each year as meriting further analysis because of reported anomalous characteristics, rather than closing them as ordinary.

What an unresolved case actually means

An unresolved case is not proof of anything extraordinary. Government reports are consistent that unresolved usually means the available data was too limited to reach a conclusion, not that investigators ruled out ordinary explanations and confirmed something else.

What is solid and what is not

That most cases get explained, and that a small share consistently does not, is documented across six decades of government studies, from Blue Book through AARO. What that remaining share actually represents is not established. In my book Disclosure: They Are Not Extraterrestrials, I focus on that residue of unresolved cases and the historical pattern behind them. Disclosure is available on Amazon. You can find more of my work at ckqbooks.com.

Sources

U.S. Air Force Fact Sheet 95-03 on Project Blue Book. AARO Fiscal Year 2024 and 2025 annual reports (aaro.mil). DefenseScoop, November 2024, on AARO's closed-case breakdown.