NASA report finds no evidence that UFOs are extraterrestrial

Astronomer Chris Impey explains NASA's independent study report, its evidentiary conclusion, data-quality problems, proposed scientific methodology, reporting stigma, and the division of responsibilities among NASA, the FAA, and AARO.

The article is a useful scientific counterweight that explains what the NASA study could and could not conclude and why calibrated, multisensor data matter.

• This is expert interpretation, not independent investigative reporting. The article discloses that its author receives National Science Foundation funding.