A strange object hovering in the field of a Kansas farm leaves behind a glowing ring in the soil.

Dozens of people witness a strange object fall into the water and become submerged in Shag Harbour, Canada.

A mysterious object stops right over John Hudson's car in the foothill of the Catskill Mountains.

These are the stories that have captivated experts and researchers' imaginations. These are the Close Encounters

A strange, flying object is outside an East Germany apartment complex... and then the light moves to the window.

The Hale - Bopp comet was overhead but a strange formation of lights in the sky didn't appear to be natural.

American soldiers stationed in England encounter unexplained lights in the forest and are given 'shoot on sight' orders.

John Smith and his cousin Billy have a mysterious encounter while driving on a remote highway in the Yukon. Was it a UFO?

In Danbury, Conn., a crowd observes a triangular craft in the air. It was part of a wave of sightings in the Hudson Valley, where more than 5000 similar events were reported between 1983 and 1986.

When a police officer investigates an explosion in the desert, he sees what appears to be two small men in black. Can he trust his eyes?

It's 1975 at Loring Air Force Base, the largest strategic Air Force base in America - and a repository for nuclear weapons. Military officers at the base witness something unexplained.

It's 1967, the Cold War is on and there's a glowing orange light hovering over a U.S. Air Force base.

A farmer out for a regular drive in broad daylight sees something completely out of the ordinary: a 30-foot-wide flying saucer.

A police officer spots a strange light in the sky in Minnesota. Things only get stranger after he crashes right into it... or it crashes into him.

On a sales trip in rural Australia, one man witnesses a strange light in a field. His car spins out of control, which is when things get even stranger.

An Australian ranch hand races to protect his herd from a nearby object that is hovering directly over his water tower.

The Hale - Bopp comet was overhead but a strange formation of lights in the sky didn't appear to be natural.

A Japan Air Lines pilot spots a mysterious object on his radar and sees bright lights outside the window of his aircraft.

A police officer spots a strange light in the sky in Minnesota. Things only get stranger after he crashes right into it... or it crashes into him.

A mysterious object stops right over John Hudson's car in the foothill of the Catskill Mountains.

A strange object hovering in the field of a Kansas farm leaves behind a glowing ring in the soil.

First one police officer spots a flying object that seems to change shape as it travels - and then more officers see it.

Dozens of people witness a strange object fall into the water and become submerged in Shag Harbour, Canada.

American soldiers stationed in England encounter unexplained lights in the forest and are given 'shoot on sight' orders.

Just after World War II, as the Cold War rolls on, one Swedish farmer sees what can only be described as a ghost rocket.

It's 1975 at Loring Air Force Base, the largest strategic Air Force base in America - and a repository for nuclear weapons. Military officers at the base witness something unexplained.

A farmer out for a regular drive in broad daylight sees something completely out of the ordinary: a 30-foot-wide flying saucer.

On a sales trip in rural Australia, one man witnesses a strange light in a field. His car spins out of control, which is when things get even stranger.

When a police officer investigates an explosion in the desert, he sees what appears to be two small men in black. Can he trust his eyes?

A strange, flying object is outside an East Germany apartment complex... and then the light moves to the window.

A biochemist watches a mysterious craft land in his yard, presenting an opportunity to scientifically examine the unexpected item.

An Australian ranch hand races to protect his herd from a nearby object that is hovering directly over his water tower.