Researchers have been attempting to determine the source of several unexplained light flashes in the decades-old images.
The groundbreaking congressional hearing offered some interesting revelations - but was alien contact one of them?
Former Minuteman commander Robert Salas maintains that he reported the incident to the UFO task force last year.
The first congressional UFO hearing in 50 years offered greater transparency, but no concrete evidence of aliens.
The hearing - which will focus on the potential security risks - will reportedly feature the testimony of two Pentagon officials.
Taken from a plane in 1971, the image shows what appears to be a metallic saucer flying through the air.
The former MoD UFO investigator has suggested that alien monitoring devices could be disguised as common animals.
Ethan Siegel encountered something one night in New Mexico that would leave him perplexed for almost two decades.
A close encounter in 1997 left Sacha Christie scared of leaving the house in fear of being abducted by aliens.
The US government's secretive UFO program did more than investigate sightings of unidentified arial phenomena.
The series - simply entitled 'UFO' - has become mired in legal problems over a trademark infringement lawsuit.
Residents took to social media to share photographs of an anomalous cloud-like trail over Lazy Mountain.
A cache of 1,500 declassified documents has revealed a wide range of symptoms from UFO experiencers.
A series of very strange events accompanied a UFO sighting in the notorious region back in 1978.
A recent Freedom of Information Act request has highlighted just how many files are still held by the US government.
A detailed analysis of the best known US Navy UFO video has provided an intriguing new perspective.
It has been 25 years since a mass UFO sightings over Phoenix, Arizona captivated the world.
A number of unexplained sightings and experiences have been revealed through interviews with former officials.
An unnerving encounter with three mysterious entities occurred back in 1972 at a lighthouse on Isla De Lobos.
Back in 1997, a group of 39 people all committed suicide in the belief that their souls would be carried away by a UFO.