American military men encounter multiple UFOs near an air force base in Bentwaters, England.

Mysterious crop circles appear in Canada.

Eyewitnesses claim lights seen over Phoenix are UFOs.

Who created the mysterious lines of Peru’s Nazca plateau?

Hundreds of people in Mexico City witness the same UFO.

The phenomenon involves a series of strange lights of unknown origin caught on amateur home video.

The 1947 incident in which a debris field was found near Roswell, New Mexico, and the subsequent claims of a crashed flying saucer and even alien bodies

What crash landed in Roswell, New Mexico — and where did it come from?

Were the lights over the Hudson River Valley really UFOs?

More than 3,000 people report sightings of a UFO over Belgium.

A man is left with mysterious burns after witnessing a UFO.

The story of Betty Cash, Vickie Cash, and Colby Cash, who claim to have been exposed to radiation from a UFO incident

An Australian pilot disappears after reporting an encounter with a UFO.

Is the “missing time” phenomenon responsible for several alien abductions?

A police officer sees a UFO and its occupants land in the New Mexico desert.

Thousands see a UFO in the sky above Kecksburg, Pennsylvania.

Three people suffer radiation burns after a fire-spewing UFO hovers near their car.

The Face on Mars is described as a face-type formation in the desert of Cydonia on Mars.

The Men in Black segment likely featured testimonies from individuals claiming to have had encounters with mysterious individuals in black suits, often associated with UFO sightings and government cover-ups.

After a Canadian woman witnesses a UFO landing near her home, a mysterious video tape of the event is sent to investigators.

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Does a meteorite found in the Antarctic hold evidence of life on Mars?

UFO phenomenon from an aviation POV, positing that strange lights in the skies above Nevada and New Mexico are actually top secret military planes

A strange clear goo falls on the town of Oakville, Washington.

The UFO phenomenon has apparently ended in Wytheville, as the sightings have apparently ended, but the UFOs have never been explained.