Overview
A new tranche of U.S. government material on unidentified anomalous phenomena (UAP) has drawn attention to reports of objects moving at extreme speeds without producing an audible sound. Harvard physicist Avi Loeb, speaking to NewsNation, said the apparent combination of high velocity and silence was particularly difficult to explain using conventional aircraft or known atmospheric phenomena.
The material, discussed in a NewsNation report published Sept. 20, 2026, includes recent infrared footage as well as historical audio from the Air Force’s Project Blue Book investigation. The release does not establish that the objects were extraterrestrial or even technologically advanced, but it adds to a continuing public debate over how military sensor data should be analyzed and disclosed.
High-Speed Sightings
According to the report, some of the objects described in the Pentagon-related material appeared to travel at speeds of up to five times the speed of sound. Such speeds would generally be associated with powerful shock waves and other detectable effects, particularly in the atmosphere. The absence of reported sound therefore stood out to Loeb, who said he was puzzled by sightings in which objects appeared to move rapidly without a corresponding acoustic signature.
Sound, however, is not always recorded in an observation. The distance between a sensor or witness and an object, atmospheric conditions, the direction of travel, and the limitations of microphones or aircraft systems can all affect whether an acoustic signal is detected. In addition, apparent speed can be influenced by viewing angle, uncertain range, camera movement and other measurement limitations. Those factors make independent analysis of the original data essential before firm conclusions can be drawn.
Infrared Footage From the Middle East
The newly highlighted material reportedly includes infrared footage of six spherical objects observed over the Middle East in 2025. NewsNation described the objects as moving at approximately 480 miles per hour. Infrared systems detect heat signatures rather than producing ordinary photographic images, and their recordings can be affected by sensor calibration, atmospheric distortion, image processing and the thermal characteristics of the object or background.
The footage may be significant because it appears to show multiple objects in the same general area, but the available description does not by itself identify what they were. Spherical appearances can result from the objects’ actual shape, limited resolution, glare, compression or the way an infrared sensor represents a distant target. Determining altitude, distance, acceleration and trajectory would require access to the full recording, metadata and corroborating radar or visual observations.
Historical Context and Remaining Questions
The release also contains audio dating to 1952 from Project Blue Book, the U.S. Air Force program that investigated reports of unidentified flying objects from 1952 until 1969. Including the archival recording alongside modern sensor footage underscores that unexplained aerial reports have persisted across different eras of aviation and surveillance technology.
Project Blue Book concluded that most cases had conventional explanations, while a smaller number remained unresolved because investigators lacked sufficient information. The same limitation applies to many contemporary UAP reports. “Unidentified” describes an observation, not an explanation, and unresolved evidence can reflect incomplete data rather than proof of extraordinary technology.
Loeb’s comments highlight the scientific questions raised by the files, particularly whether the reported speeds and lack of sound can be reconciled with known aircraft, drones, balloons, atmospheric effects or sensor artifacts. Further scrutiny by independent researchers will likely depend on the Pentagon releasing complete, unedited footage and supporting data. Until that information is available, the objects remain unidentified—but the files provide additional material for evaluating how credible and reproducible the reported observations are.
