The top ten evidences of the existence of aliens are as follows: 1. UFO sighting reports: There are a large number of credible sighting reports around the world, some of which describe high-speed flight, abnormal mobility and unexplained bright phenomena. 2. Military documents: The public documents reveal the military investigations and records of UFO incidents in some countries, implying the existence of unknown objects. 3. The U.S. government admitted that in 2020, the U.S. government publicly acknowledged many UFO sightings and confirmed the authenticity of these events, saying that these phenomena could not be explained. 4. Ancient artworks: Some ancient artworks depict biological images similar to those of aliens described in modern times, which may be the records of ancient eyewitnesses. 5. Human remains and cultural relics: some ancient buildings, murals and cultural relics have patterns and symbols related to aliens, which has triggered speculation about alien civilization. 6. Mysterious phenomena: Some strange phenomena, such as the appearance of UFOs, animal deformities and microbes in meteorites, may be related to the existence of aliens. 7. Kidnapping: There are many testimonies of people who claim to have been kidnapped by aliens. Although controversial, some of them provide detailed and consistent descriptions. 8. Alien technology: Some technologies have developed by leaps and bounds, such as chip technology and nano-materials, which may benefit from the reference or assistance of alien technology. 9. Blocking and obstructing: Some people claim that the government and other institutions block and obstruct the existence of alien creatures in an attempt to cover up the truth. 10. exploring extraterrestrial life: recent planetary exploration missions, such as Kepler and mars rover, have found some signs that may indicate the existence of extraterrestrial life.