From the ancient to present times, millions of people have claimed to have seen unidentified objects (UFO) in the sky or have encountered beings from outer space. The UFOs and alien beings are one of the most controversial mysteries to mankind; although we have never been sure whether these are our mere imaginations, Air Force experiments or visitors from distant planets. There have been recordings trying to prove that they are true albeit most of those are a hoax. There are countless famous incidents such as the Hill abduction case and the UFO crash in Roswell. Is this some sort of a huge conspiracy, or are there people who wish to have public attention?
There are many records which say that extraterrestrial beings have visited Earth from the ancient times. These records, found in the form of stone tablets, petroglyphs, paintings and monuments, are located throughout the Earth. For example, a stone plate, which is dated to be 9,000 years old, was found in Nepal. It had drawings of aliens and a hovering disk in the centre (appendix A). Another evidence is found in Kimberly, Australia. It is around 5,000 years old and are thought to represent aliens.
Encounters with aliens began to attract attention around the 1950s. Some of the most famous cases are the Antonio Villas Boas case in 1957 and the Hill abduction in 1961. Since then, numerous reports of encounters with aliens and sightings of UFOs have risen. Those with alien encounters describe their abductors in similar styles, for example, ‘greys’, reptilian and hybrids. If these encounters are a hoax, it is a very effective one; on the other hand, if this is a veritable occurrence, it is one of the most unresolved mysteries on Earth.