Several reported common characteristics of the 5-10% unexplained UFOs may best be described by astronomer, and leading UFO researcher Dr. J. Allen Hynek:
UFOs maneuver with ease in our atmosphere, and appear largely unaffected by gravity and the inertial properties of matter as exhibited by the ability of hovering a few feet above the ground or high in the air with seeming little effort, and the ability to accelerate, often noiselessly, at incredible rates by ordinary standards.
Hynek’s description evolved from his personal investigations as scientific adviser to several studies undertaken by the U.S. Air Force to analyze the UFO phenomenon. This evidence depicts the general appearance and behavior of a typical unexplained UFO: 1) luminous and surrounded by a haze; 2) can become invisible and then a few seconds later may appear a short distance away; 3) physical dimensions can change or “shape-shift,” 4) wobbles, remains stationary, and is noiseless with no indication of a propulsion system such as propellers or jets, 5) appears to defy gravity and inertia, 6) sudden motion from a stationary position, immediate stops, and angular maneuvers at extreme velocities, 7) produces electromagnetic effects (EM), and physical ground traces in the form of landing marks, radiation, and disturbed vegetation and soil, and 8) induces physiological effects in humans such as sensation of heat, temporary paralysis, nausea, etc.
The National Aviation Reporting Center on Anomalous Phenomena (NARCAP), founded in 1999 by NASA aeronautical research scientist Dr. Richard Haines and Ted Roe, was developed because of concerns presented by UFOs for the aviation industry. According to the NARCAP:
The aviation industry is operating under a bias that is causing an under-reporting of safety-related encounters with UFOs. Without this data, effective procedures have not been implemented and there is a real threat to aviation safety.
In a study by Haines, an analysis of over one hundred UFO reports generated several general characteristics with shape being one (e.g., spheres, elliptical, triangles, cones, and diamonds, are the most commonly reported forms), and unique lighting patterns and their effects in the form of individual surface lights, glowing surface, color changes upon acceleration, and lights flashing at different frequencies and intensities. Based on evidence analyzed among several researchers, Haines concluded that UFOs “are associated with a very high degree of intelligence, deliberate flight control, and advanced energy management.” Further, he contends that UFOs are capable of producing physical effects in the form of ”landing marks,” disturbed plant life near landing sites, and physiological effects on humans such as temporary paralysis, unusual sensations, eye irritation, headaches, and nausea.
UFO Kinematic Behavior and Effects
The maneuverability of UFOs is characterized by rapid acceleration from a stationary position, hovers for long periods of time, descends like a leaf falling as if wobbling, decelerates quickly to a stop and then accelerates in a different direction, makes acute-angle turns, and “tilts leading edge down to go forward, leading-edge up to stop or reverse, banks to turn,” etc. The invisibility attribute of the phenomenon has also been a major source of debate. One thought is that the UFOs rapid acceleration from a motionless state creates the appearance of vanishing. Changes in diameter have also been described as “winking out, from the outer edges inward,” and that it “seemed to implode and shrank, and at a higher level it reappeared again.” Such ability may reflect an unknown type of interrelationship among propulsion, gravitational fields, and momentum.
Dr. P. Hill, who provides a comprehensive evaluation of UFO maneuverability in his book, Unconventional Flying Objects: A Scientific Analysis, contends that UFOs are able to travel up to 9,000 mph through the use of an “airflow-control force field” that results in a “constant-pressure and density flow” around the craft to reduce friction and heating. Hill believes, based on his experience with missile dynamics, familiarity with UFO maneuvers, and “advanced knowledge of UFO technology,” that UFOs “adhere to the laws of physics.” In support of Hill’s analysis of UFO behavior, Dr. H.E. Puthoff, from the Institute for Advanced Studies at Austin stated:
In the final analysis, one must conclude that Hill has assembled as good a case as can be made on the basis of presently available data that the observation of some “unconventional flying objects” is compatible with the presence of engineered platforms weighing in at something around 30 tons, which are capable of 100-g accelerations and 9,000-mph speeds in the atmosphere. Perhaps more important for the technical reader, however, is Hill’s supporting argumentation, based on solid analysis, that these platforms, although exhibiting the application of physics and engineering principles clearly beyond our present-day capabilities, do not appear to defy these principles in any fundamental way.