There are countless theories about how aliens visited Earth, or are here right now. Some of them were created to scare people before they go to bed.
However, in 1991 there was a real NASA report on the existence of an Earth orbiting probe of unearthly origin, writes alien-ufo-community. It was named 1991 VG because it was discovered in December of the same year, and it was also described as an object about 10 meters in size and in heliocentric orbit.
Then he came very close to the Earth. Rapid fluctuations in brightness were noticed. Since its orbit was very close to Earth, leading scientists believed that the object was created by humans.
The strangeness became clear later when they checked all the artificial satellites that were sent into space. It was quickly discovered that the object did not match any vehicle sent to orbit. In addition, the very precise movements of the object of scientists led to the belief that it is controllable, and its trajectory is not random. The point of the meeting was probably to watch us.
After a while, the probe left orbit and retired. But not too far, and in such a way as to return to the vicinity of the Earth in 2016!