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13188 facts from 150 countries related to 919 phenomena have been registered. 1820 of them were solved, another 4813 are under verification for compliance with one of the 284 versions.

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This section includes information about possible versions explaining the true nature of the event described in the fact.

Objects of artificial origin

The signal strip

Rattling strip, also known as warning strips, Audible lines, Growling lines - are the device for road safety by alerting inattentive drivers of potential danger by causing a tactile vibration and a

The waste industry

This category may include the remains of materials, raw materials, semi-finished products formed in the process of production.

Traces of medical manipulations

There are a huge number of medical manipulations, traces of which can be taken randomly or specially issued for the impact of the poltergeist or the consequences of abduction by aliens.

A target for clay pigeon shooting

Trap shooting - one of the subspecies of the shooting sports. Competitions in clay pigeon shooting are conducted on the open range.

Submarine

Submarine (submarine, submarine) class of ships able to take and long time to act in a submerged position.

Ritual, rite, custom

Ritual (lat. ritualis – ritual, from the Latin.

Seismic profile

Geological dictionary defines the seismic profile as a straight line, rarely broken line on the Earth's surface along which the seismic receivers are arranged for the study of elas

Garbage

Not infrequently it happens that the trash accidentally or intentionally left by the person, may be something abnormal: signs of alien eggs alien, unknown water and land creatures, etc..

Body modification

A modification of the body is a biological and physical alteration of the human body, in violation of the established structure of the body, through surgical, genetic, aesthetic, biological correct

Holes from bullets, stones, and metal balls

Glass houses, regardless of the floor, there are holes of unknown nature and characteristic shape. Very often, if glass a few punched is only one.

The spires of the skyscrapers, the mountains, the pipe above the clouds

Part of skyscrapers, pipes, which they smoke, the high parts of mountains and other high areas of the landscape and buildings towering above the clouds or mist, may be mistaken for UFOs or ghosts.

Boat (watercraft)

Any watercraft, particularly of unusual shape, can be made for NGOs.

Turn tractor

In the boom period of observation "Circles" around the world, the witnesses, yielding to the excitement, took them for a lot of ordinary things, like the antics of a wind, Pets on a leash or myceli

Cable car

Cable car is a mode of transport to move passengers and cargo in which to move carriages, carts, booths or chairs or serves as a traction carrier traction rope (cable) stretched between the support

Space debris

By space junk refers to all manmade objects and their fragments in space, which is already faulty, not functioning, and will never be able to serve any useful purpose.

Satellite

Conventional satellites, which often look like a single not very bright points of light gliding through the night sky, quite often mistaken for UFOs.

A solar sail

A solar sail is a device that uses the pressure of sunlight on the mirror surface for propulsion of the spacecraft.

UAV

Unmanned aerial vehicle (UAVs, also sometimes shortened as BLAH; colloquially sometimes referred to as "drone" or "drone" (from the English. drone — drone)) — aircraft without crew on Board.

Kite

Tethered flying machine heavier than air. Supported in the air by wind pressure on a surface set at an angle to the direction of movement of the wind and held by the guard rails from the ground.

Paratrooper/glider pilot

Parachute - a device made of fabric to slow the movement of the object in the air. Parachutes are used for safe descent and landing of goods and people, braking of aircraft during landing.

The plane/helicopter

Flying machine heavier than air to fly in the atmosphere (and in space (eg.

Balloons and balls

Balloon — aircraft (balloon), which is used for the flight gas, which is lighter than air.

Sky lantern

Sky lantern (Chinese lantern, Thai lantern) – flying glowing paper design rice paper stretched over a light wooden frame, bamboo ring burner.

Balloon/Weather Balloon

The balloon (simplified is a balloon) — an aircraft lighter than air, where the lift force is used

The airship

The aircraft lighter than air, which is a combination of the balloon with the mover (usually a screw with an electric motor or internal combustion engine) and the system of the orientation control

The lights on the clouds

Lasers, spotlights, car headlights and other light sources of sufficient power can create a pillar of light in a dusty or foggy atmosphere, different patterns on low clouds, fog or

Искусственная комета

Rocket in the troposphere emits a cloud of sodium vapor or barium, which glow intensely under the influence of sunlight.

Debris picked up by the wind

For UFOs often take empty plastic bags, bags from waste paper, Newspapers and other debris picked up by the wind. These objects can travel at different speeds, in different shades and shapes.

Foamy clouds

At festivals and presentations occasionally used apparatus for producing artificial clouds of different shapes. Clouds consist of "foam fluid + water + gas" (helium).

Effect Kopp-Etchells

This effect is observed during the motion of the helicopter in a sandy cloud (E.g., during landing or takeoff in the desert).

Toy

Led toy, run at night or in the evening, can be taken for UFOs at random when shooting from afar.

Уличный фонарь

In many cities (especially European) are widely distributed street lights, weighing on an extension wire.

Rear light reflector

The device with the surface properties of retroreflection. In the cat's optic is a simple process of retroreflection.

Animals on a leash

In a meadow or other area with sufficient grass cover is tied cows, goats, horses and other herbivorous animals, providing them food and some opportunity to move freely.

The cigarette butt

In a random survey of the landscape from the Windows of flats at night, pictures can appear bright red-orange stain.

Booster, the rocket and tracks

For UFOs often take stages of rockets, parts of space ships burning in the atmosphere, the launches of various missile technology for military purposes, etc., and traces from them.

Lighthouse

Means of navigation equipment of the coast of large reservoirs in the form of a capital construction, quite often tower type, is used to map observed by the skipper of the painting with a specific

The lights of cranes, pipes and skyscrapers

Most often, this category can be attributed to the lights of a crane, high-rise buildings, boiler pipes, etc., equipped with nighttime lighting that is visible through the haze, fog, or when the co

Bubble

The bubble film consists of a thin layer of water enclosed between two layers of molecules, often soap. These layers contain molecules, one of which is hydrophilic and the other hydrophobic.

Marker wire

Used to make the wire visible, and prevent Christiania wires. Installed at the intersections of waterways, roads, places of migratory birds near airports, etc.

Pyrotechnics

This category can be attributed not only visible in the sky pyrotechnic shells, but traces of exploded snaryadov, fragments thereof and other such activities.

Method of mowing the grass "in acceleration"

The most gentle when mowing on an industrial scale (with farm equipment) is a method for mowing crop circles from the center of the field to its periphery (method, "acceleration").

Buildings and structures of unusual design

There are residential and non-residential buildings and structures, the construction of which may resemble a landed flying saucer.

The art of the action

Various promotions advertising and art can be priniti randomly for the paranormal or issued for them intentionally.

The plume of combustion products of the rocket engine

The plume of combustion products of the rocket engine is visible only when the line of sight he is "dense enough". If a trail gets between the sun and the observer, he may look like a dark cloud.

Cocurrent stream (cocurrent track)

Limited the scope of the perturbed gaseous environment arising from the movement in her body.

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