Things you don't know about UFOs

Surely anyone who loves science already knows UFOs, but what UFOs are, it is unlikely that everyone knows the clear definition of it. So let us find out what UFO is through the article below.

What is a UFO?

UFO is an abbreviation for unidentified flying object in English, meaning "unidentified flying object" , referring to objects or visual phenomena that fly in the sky without being able to determine what it is even after having many people have studied very carefully.

Many UFOs are described as strange, and some have considered that UFOs are spacecraft built by extraterrestrial creatures. There is no clear evidence from the natural science that such a spacecraft exists, although there are many types of evidence that are being debated in the community. Many UFOs learned that now there is clear evidence, but governments are hiding them, possibly because they are afraid of the spread of panic and divisions if they reveal such information.

In Vietnamese, UFOs are often referred to simply as flying saucers .

Image of flying saucer (UFO) in human imagination.

Classification of UFOs

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Type I

Strange objects of spherical shape, discs or other shapes, meet on or near the ground (about the height of trees, or lower, can be accompanied by traces such as high temperatures, glare or effect on machines.

1. On or near the ground.
2. On or near the water.
3. Dazzling activity or sign of attention.
4. The object seems to be "scouting" an Earth's transport.

Type II

The strange object has a cylindrical shape standing in the sky, accompanied by a cloud. This phenomenon is often given many names such as "cigarette-cloud" or "cloud-sphere".

1. Unusually moving in the sky.
2. Immobilizing and producing child objects (often called "satellite objects").
3. Surrounded by many children.

Type III

1. Strange objects are in the form of spheres, discs or ellipses.
2. Move in a "falling leaf" style, either up and down or swinging.
3. Moving continuously, suddenly stopped, then moved on.
4. Change shape while flying, such as changing the brightness, producing baby objects .
5. "Stingray" form often goes into a bunch of objects.
6. Suddenly changing the trajectory when flying continuously, turning into a slow flight on a certain area, or abruptly switching it.

Unidentified flying objects appear in the sky of Mars.(Photo taken by NASA Spirit Spirit self-propelled vehicle).

Type IV

Strange flying objects

1. Fly continuously.
2. Orbit depends on the aircraft in close proximity.
3. Fly by an organization.
4. Zig-zag orbit.

Type V

Strange, strange object, for example, unknown material, not completely tangible, does not have solid material form.

1. Dim.
2. Bright point-like objects like stars.
3. Surfing through the sky, can be with strange orbits.