The unidentified flying object is briefly known as UFO.
This is an aerial phenomenon.
We cannot explain it easily.
Majority of UFOs were found as conventional objects .
People observed extraterrestrial spacecraft in the sky!
In 1946, there are 2,000 reports by Swedish military.
It is related to unidentified aerial objects across Scandinavia.
There were reports from France, Portugal, Italy and Greece!
From the Pacific and European theatres at the time of World War II
we have observed "foo fighters".
These are metallic spheres.
It might be balls of light.
The photograph was made by pilots of Allied and Axis.
There are 1,305 sightings.
They have been grouped by NARCAP.
It occurred in 1916 and 1926.
On 31st January, 1916, the pilot from UK
Close to Rochford
Had found lights in a row across the sky!
It looked like lighted windows over railway carriage.
It had risen and vanished in the sky!