A prototype balloon malfunctioned during a test flight and generated a wave of UFO sighting reports.
A local astronomer spotted the object and reported it to the Leicestershire UFO Investigation Network.
A passenger on a commercial flight over the English capital this week caught something unusual on camera.
Retired engineer Duan Phillips has spent the last 15 years constructing a saucer-shaped flying vehicle.
A new survey has identified the Canadian city as one of the best places in the world to see a UFO.
A famous supernatural incident during World War I may have had a rather more otherworldly explanation.
Several witnesses had reported seeing strange lights in the skies above New Zealand over the weekend.
An incident involving three UFOs crashing in China could be due to a Russian rocket launch explosion.
Many have attributed the untimely breakdown of the Jade Rabbit rover to extraterrestrial intervention.
The valley is home to mysterious hovering orbs of light that have been sighted for more than a century.
The production crew didn't know they'd even filmed anything unusual until the footage had been reviewed.
Dick Smits had been videotaping a boat on a canal when he spotted the strange object above him.
Several people witnessed an unidentified object in the skies over Portreath on the night of April 27th.
A London resident managed to take several photographs of a strange dark-colored object over the capital.
A television camera filming a football match captured the moment a strange white object flew overhead.
A commercial pilot with more than 30 years of experience believes he witnessed something unusual.
New evidence seems to support the authenticity of a particularly controversial declassified CIA document.
Several witnesses observed the phenomenon in the sky over a rural part of England.
The mysterious pair of lights that appeared in the footage seemed to be floating off the ground.
A dark triangular object caught on camera over Texas is thought to be a classified military plane.