Unidentified flying object (UFO), History, Sightings, & Facts

Unidentified flying object (UFO), any aerial object or optical phenomenon not readily identifiable to the observer. UFOs became a major subject of interest following the development of rocketry after World War II and were thought by some researchers to be intelligent extraterrestrial life visiting Earth.

Why 'The New York Times,' 'The Washington Post,' and Politico Didn't Publish a Seemingly Bombshell Report About UFOs

After decades of skepticism, scientists make another attempt to unravel mystery of UFOs

Unidentified Flying Objects: 20 Facts, History & Sightings - Fact Republic

History's Most Infamous UFO Sightings of the Modern Era

A whistleblower claims the US has alien vehicles. But where's the proof?, US news

Brief history of UFO sightings

Reports of rising UFO sightings are greatly exaggerated

10 Famous American UFO Reports: Fact or Fiction?

UFOs Are Real, But Don't Assume They're Alien Spaceships

UFOs: Man-Made, Made Up, and Unknown – Pieces of History

UFO Sightings in Arkansas

A UFO conspiracy theorist's search for the truth - Washington Post

What exactly are UFOs?, Articles