1- The theory of the "zoo"
Mankind sees extraterrestrials only as possessors of extraordinary intelligence. They do not contact us so as not to confuse the development of life on Earth, while they can only contact us if humanity evolves.
2- Dispute theory
Extraterrestrials on Earth have sent pores that have evolved into several life forms. They do this through asteroids and other flying objects, where they attach bacteria that enable life to develop on the planets.
3- Agreement with extraterrestrials
The technologically advanced aliens contacted the US government in 1948 and made an agreement with them, where the aliens were given their advanced technology, while the US was offered in exchange, the right to experiment with humanity.
4- Franklin Conspiracy
The Briton has hidden the tracks of giant racing dogs in the Canadian Article. They are said to be extraterrestrials, who are responsible for the death of a lost expedition to the Arctic during 1840.
5- The moon as a spaceship
The moon brought the spacecraft back to Earth 11,000 years ago. Extraterrestrials live inside it and are manipulating our brains.
6- The Raelian Movement
A religious organization, which claims that life on earth was created by extraterrestrials called Eloh. They often visit the earth, but have been replaced by gods and angels.
7- Hitlerism
The Aryan race are the descendants of aliens, who have evolved into humans. According to this theory, Hitler is hiding from the aliens and is waiting for the time of the arrival of the fourth Reich.
8- Reptile elite
Extraterrestrials that are reptiles have the ability to change-enslave humanity and place extraterrestrials in the Earth's social, political and financial elite. Apparently, some of them are British Queen Elizabeth II and former US President George W. Bush.
9- Men in black
They really exist, mask any alien effect on our planet, and even among the agents are aliens.
10- Ancient extraterrestrials
They often visited the land, and helped build the pyramids and stones of "Stonehenge", while the evidence of their existence is said to be the carvings on the walls of the pyramids.