One of the unusual properties of UFOs is their ability to disappear, becoming invisible to the human eye, and also suddenly appear. There are a number of cases, when clearly visible objects in front of witnesses suddenly vanished or disappeared in one place, and suddenly appeared in another.

In June 1966, about farm in Avarone (France) appeared three ball of fire flying across the field to the farm. One of these balls hung in 15 m from the house and hung motionless for 3 minutes, then suddenly disappeared, and after a few seconds appeared again a few hundred meters from the house. Such instantaneous movement continued for some time.

To print a case, onua.org occurred near the city of Mulhouse (France), where three young men saw orange-red ball with a diameter of 50 m down to earth by zigzag trajectory and landed in a clearing in 300 m from eyewitnesses. But when they went to the ball, he immediately disappeared.

In our country, in July 1979 on the road from Chrysostom to Beloretsk three witnesses, who was riding in the car, saw the approaching from behind the fireball the size of a two-storey house. They looked at him for 2 minutes, after which the ball suddenly disappeared, and after 2-3 minutes, appeared again, but already ahead of the car, and still hovered for a while, and then suddenly disappeared.

Along with this has been repeatedly observed cases when the UFO before the eyes of eyewitnesses suddenly appeared as if from nowhere.

In April 1954, near Dartmouth in South Devon, England before the reserve officer Brighton suddenly, as if from the air, there was a large oval object, Pariisi at a height of 1 m above the ground.

In another case, on Damanskom channel (USA) in front of two firefighters, fishing, suddenly, as if out of nowhere, appeared round glowing object with a diameter of 4.5 m Hanging on the height of 20-25 m, he then escorted their boat during 3 km.

At first, attempts were made to explain these properties UFO peculiarities of their kinematics. It was assumed that these objects suddenly disappear from view because of the fact that scuttled away with great speed. And their sudden appearance was due to arrive with the same blazing speed and instant stopping. The following example to some extent confirms the possibility of such assumptions.

In June 1968 in DAX (France) spouses J., who was riding in a car with a speed of 110 km/h, suddenly saw before him in the middle of the dark hemispherical object with a red flashing light. They slowed sharply - collision seemed inevitable, and as it drove this object through, nothing felt. Apparently, at the last moment he really lightning onua.org he took off and disappeared. The traces found then the landing site, and confirmed that it was not a Mirage.

The fact that spouses J. continued to see the object until the very last moment and did not see him take off, can be explained by two circumstances:

first, the fact that the human eye does not have time to register objects moving too fast. (It is known, for example, that object, flying close to the ground at a speed of 10 km/s or moving with acceleration more than 20 g (barely visible);

second, the fact that the image instantly disappeared subject still remains on the retina of the human eye what little time.

However, over time they began to accumulate data on the ability of UFO gradually "to melt" or whatever integration" in the air in front of witnesses.

In the summer of 1960 in the village of Kadamjai (about Fergana) head of laboratory of the Institute "Gipronickel" Sheinin saw the approaching from Fergana glowing object in the form of a disk with two rods like antennas. The object of this was typical metallic luster. He hung motionless and was clearly visible. Suddenly his shape was lost sharpness, and within 1-2 seconds changed misty spot, which then disappeared.

In March 1978 in Togliatti was observed oval object of blue color with a diameter of 150 m with sharp edges. This object was flying at a height of 300 m and as it approaches observers gradually become transparent, so that through him it was possible to observe stars. While its outer faces remained clear. Then the object hovered motionless at a height of 100 m above the neighbouring house 100 m from eyewitnesses and melted. All observation lasted 7 minutes.

These examples gradual "melting" UFO show that their disappearance may be associated not only with their immediate departure, but with some of their ability to become invisible to the human eye, although it is against our onua.org the usual materialistic views about the world.

Confirmation of the ability UFO become invisible to the human eye are also the following cases, when after manifestations photos "pure" sky or "pure" location they were found UFO.

In August 1979, Riga operator pipes, being on a fishing boat in the Greenland sea, the night has made 12 colored images of the night sky and the dark sea with lights running vehicles. What was his surprise when after developing, he saw the four images of the twelve bright oblong glow, which occupied the footage almost half of the sky and gradually changed its shape.

In September 1983, near AI-Petri rostovchanin Ryzhkov did five photos of the surrounding area, and when he showed the film, was surprised to see three pictures show large dark object hovering over the top of the mountain and flying over the highway.

Similar cases have occurred in 1959, on a polar station of Tiksi, in 1960 in the village of Zelenchukskaya, 1967, near town of Menopause (Colorado) (Fig. 39), in 1971, in Regensburg (Austria) (29), in 1976 near La Spezia (Italy) and in 1990 - in the city of Gorky.

But sometimes it turns out, conversely, when clearly observed subjects appearing in the photographs.

In September 1977, the engineer Novozhilov near the village of Kurkijoki, North of Priozersk, three times photographed a UFO similar to the airship, which flew right over him at the height of 300-500 m, but images of UFOs in the pictures was not.

In February 1979 UFO during the whole week was hung over the Polish resort of Zakopane. He was perfectly visible, but to capture it on film movie cameras or cameras failed, because the film was only a vague light spots.

In March 1990, in Belgium were made the four images of UFOs, flying at an altitude of 300-400 meters and perfectly observed with the naked eye, but in demonstration of the film of the image of object it was not. Trying to explain this strange onua.org the ability UFO, Professor Messen made experiments that proved that irradiation negative film infrared rays of the image disappears.

The disappearance of images UFO on film, according to Messen, is also under the powerful infrared radiation, which sometimes emit objects and which illuminates the film.

Even more surprising when the photos objects look not such what they saw photographing.

In March 1966, in CONABIO (England) Steven Pratt photographed moving slowly across the sky single source orange light. And after developing the film on it are removed three of the object, which was in the form of plates and flying each other on one line. The second object was less than the first, and the third is less than the second.

Something similar happened in January 1979, when taking Australian TV in New Zealand 30-minute film on which were recorded flights few oval UFO Golden brown, who had a kind of add-ins. After watching the film the members of the crew said that the images of UFOs, resulting in the film, in form and color are very different from what they observed visually.

All these facts show that the human eye can sometimes see objects are not such as they perceive the camera lens.

Quite often observed visually UFOs are not recorded on the screens of radars.

In the summer of 1976 in the Chita region near the border with China, the personnel of the radar post of air defense forces, border guards and inhabitants of the district center observed the unusual place of the oblong form with portholes and three rays directed vertically to the ground. This object within 3 hours slowly moved horizontally in one direction and then in another direction, including on and off onua.org their projectory”and then suddenly disappeared. Thus, three types of radars two radar stations it is not recorded.

In 1979, the members of the crews of two aircraft, flying in the district of Barnaul, b minutes watched the glowing object that approached at high speed, stopped, climbed to a great height and hung, then sank down again and began to leave. Screens onboard radars not recorded.

In February 1989, above the town of Progress (Guatemala) hung a large UFO in the form of plates with red flashing lights on the edges, which housed around three objects of the same shape, but of smaller size. All four of the object was visually observed by the majority of the inhabitants of Progress, but for some reason were not recorded by the radar.

According to the group of aerospace research of the phenomena at the French space center in Toulouse, radars record only 5% of the observed objects although this figure is likely understated. On the other hand, there are a number of cases when objects are fixed by radar, there was not observed visually, although it was within sight.

In early 1945, radars group of American ships, who were preparing for the invasion of Okinawa and marched along the archipelago of Nansei-Shoto, found 200-300 unknown objects approaching ships at 1600 km/H.

Against them were immediately sent fighters raised from aircraft carriers. But the planes freely slipped through this flying Armada, not noticing no object. And operators shipborne radars documented that the group ghostly objects with impunity flew over the American ships at the height of 600 m, although visually they were not observed.

In December 1986, the Japanese research vessel "Kagemaru", who was in onua.org Central Pacific ocean, close to 2.5 km unknown oval object with a length of several hundred meters, which is twice circled the ship and disappeared, and after a few seconds appeared again and thunder over a ship at low altitude. The object is clearly recorded on the radar screen, but visually it was not observed. The speed of its flight was about 5000 km/h (Izvestia, 1988. 18 September). '

According to NICAP, between 1948-1967, of the 81 cases commit UFO radars they only 60 cases were observed visually.

In our country in 1980-1984, and screens of radars Kharkiv airport 12 times were recorded unknown objects moving with great speed, savesave or making sharp maneuvers vertically, and only in four cases they observed visually. There are cases when a tag of UFOs were observed on the screen only one of the two adjacent radars, who worked at different frequencies.

According to the pilot of the first class Chalupova, in July 1982, the label from UFO flying over the airport of the city of Roslavl, it was only visible on the screens of radars UHF, while the radar measuring range did not fix this object.

Known and such cases, when the mark of UFOs on the screens of radars are kept, but not constantly appear, then disappear. At the time of UFO sightings over Washington in July 1952 labels from these objects on the screens of radars disappeared with the advent of fighters and appeared again, when planes flew away.

One of the most reliable long-term fixation UFO aircraft and ground-based radars took place in September 1957, when American spy plane RB-47 slung over the Mississippi, Louisiana, Texas and Oklahoma, within one and a half hours were in contact with UFOs. Unknown object was recorded by the radar onua.org in a separate provisions on the right, left, behind and in front of the aircraft, although its trajectory between these provisions reason is not apparent.

Sometimes the object was observed visually by the flight crew, who, trying to chase the object, made a circle in the Dallas area. Equipment electronic intelligence ELINT installed on the aircraft, fixed frequency radiation of the object, equal to 3000 MHz repetition 600 pulses/s

To find any satisfactory explanation of anomalies appearing when photographing and fixing UFO radars is also not yet possible.