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UFO Stories

UFO Stories

Explore the wide and mysterious world of unexplained aerial phenomena.

Map of UFO Sightings Taken Seriously by the U.S. Government

Interactive Map: UFO Sightings Taken Seriously by the U.S. Government

Mysterious lights. Sinister saucers. Alien abductions. Between 1947 to 1969, at the height of the Cold War, more than 12,000 UFO sightings were reported to Project Blue Book, a small, top-secret Air Force team. Their mission? To scientifically investigate the incidents and determine whether any posed a national security threat. Here are some of their most fascinating cases.

 Nevada: Area 51 research center. — Image by © Mark Peterson/CORBIS

Inside Area 51: Test your Knowledge of the Real History

Stealth aviation. Obsessive security. Clandestine A-Bombs. How much do you know about the real history of Area 51?

Cold War Sightings


How the U.S. Air Force Investigated UFOs During the Cold War

On the afternoon of June 24, 1947, amateur aviator Kenneth Arnold was flying near Mt. Rainier, Washington, when he suddenly spotted nine unusual objects on the horizon. Arnold claimed the craft flitted from side to side and flipped in unison like “the tail of a Chinese kite,” and more


Project Blue Book

In June 1947, while flying his small plane, businessman and civilian pilot Kenneth Arnold reported seeing nine objects moving at high speeds through the skies over Washington’s Mount Rainier. Widely publicized reports of Arnold’s experience, followed by an increasing number of more

Dr. J. Allen Hynek

Meet J. Allen Hynek, the Astronomer Who First Classified UFO 'Close Encounters'

It’s September 1947, and the U.S. Air Force has a problem. A rash of reports about mysterious objects in the skies has the public on edge and the military baffled. The Air Force needs to figure out what’s going on—and fast. It launches an investigation it calls Project Sign. By more

Contemporary Sightings

More UFO Stories

 Nevada: Area 51 research center. — Image by © Mark Peterson/CORBIS

History of UFOs

ROSWELL, NM – 1997: Massive rock that supposedly was split in two by a spaceship impact in Roswell, New Mexico.  (Photo by John B. Carnett/Bonnier Corporation via Getty Images)



Kenneth Arnold