UFO. Netherlands

Our brain, based on the experience of perception, takes the characteristic of approximation / removal of parameters depicted object for real movement. The illusion may work on circular objects, if they caused the picture imitating the play of light and shadow when rotating a round, flat object. At the same time, if you focus on a single site, the illusion of rotation on it immediately disappears.

This principle works not only when moving the head, but the motion of the person, if the picture of such a principle is found in the elements of the landscape.

The brightest heavenly bodies in the sky are Venus, Jupiter, and sometimes Mars and, of course, the Moon.

Venus is the bright yellow of the evening or morning star, shining in the sky on the background of evening or dawn. Maximum brightness of Venus can reach up to 4.3 m, and she is the third brightness of the sun in earth's sky after the sun and the moon. It so well reflects the light of the Sun that it is relatively easy to see and day, especially if you know the location. It manifests itself in the form of tiny blinking white dots.