Why they appear ?
It is trusted that Alien appearances depend on three reasons – a) an endeavor to impact the eventual fate of mankind, b) endeavor to caution or educate and c) experimental use.
The Sightings
According to many surveys and reports an average of 70,000 UFO sightings are reported every year, worldwide. Per day average counts up to 192 per day.
Considered illegal
According to a report it is illegal for U.S. citizens to have any contact with extraterrestrials or their vehicles under Title 14, Section 1211 of the Code of Federal regulations, implemented on July 16, 1969.
The first proof was totally not spoof
In the year 1883 an astronomer named Jose Bonilla in Zacatecas, Mexico, took the first photograph of a UFO.