US Department of Defense has published a report analyzing all official investigations into unknown objects spotted in US airspace since 1945. The result: There is no evidence of extraterrestrial life.
The report explains the increase in UFO sightings in the 1950s and 1960s with secret military tests at the time. According to a 2021 Gallup poll, just over 40 percent of Americans believe that alien spacecraft have visited Earth. The authors declare that their approach was strictly scientific. However, they themselves do not believe that their study will dispel popular belief in extraterrestrial visitors.