While the existence of aliens or extra terrestrial beings remains a matter of debate among scientists and researchers, some believe that they are real and have visited or interacted with humans on Earth.

There are various theories on the nature of aliens, including their appearance, origins, and motivations for visiting our planet. Some believe that aliens are highly advanced beings from other planets, while others argue that they could be time travelers or entities from other dimensions. There are also those who argue that aliens are demons.

This category covers a range of topics related to extraterrestrial beings, such as types of aliens, personal encounters and observations of aliens and alleged involvement in human affairs.