UFO. Netherlands

There are residential and non-residential buildings and structures, the design of which can resemble a landed flying saucer. Sometimes such buildings are framed by illuminated spotlights or decorated with light bulbs, which increases the similarity. Also it may not be provided by the design, but made intentionally for a good frame with a UFO. This can also include various moving mechanisms.

These structures include unusual hotels, water towers, storage facilities and radio transparent shelters for radar stations.

This version can refer to any observation in the contrast of an object on a solid background, both day and night.

Night it can be a light in a dark house, on the technique in a dark room, etc.

Day the color of the sky sometimes merge with the color of the surface of the Earth at the horizon level. While it may seem that the object on this piece, floating in the sky. It is clearly seen, for example, at the marine landscapes. This illusion may occur as in the photos (especially black and white) and by direct observation.

This category includes not only pyrotechnic projectiles visible in the sky, but also traces of exploded projectiles, their fragments and other similar activities. 

Pyrotechnics is a branch of technology related to the technology of preparing combustible compounds and burning them to obtain a certain signal or effect.

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