The National Archives has published a collection of 15 Ministry of Defence files on the subject of UFOs.
The pilot who famously reported witnessing the 1997 Phoenix Lights was actually actor Kurt Russell.
'Back to the Future' director Robert Zemeckis will be producing a new TV series about Project Blue Book.
A selection of previously withheld documents about UFOs could be seeing a release in the near future.
An investigation has been launched after it emerged that the group had received almost $6,000 in grants.
More UFOs have been reported over California than any other US state, claims a new book on UFO encounters.
An unidentified witness reported seeing a 'silent camouflage aircraft' over the town a few weeks ago.
The Canadian UFO Survey has revealed in its annual list that 2016 was a busy year for UFO sightings.
A crew member of an offshore supply ship claimed the object was 'five times the size' of his vessel.
A string of UFO sightings across Washtenaw County in 1966 drew the attention of the entire country.
Tolima province residents were left terrified after a mysterious object crash-landed near their homes.
Recently released government files have revealed a spate of UFO police reports over the last few years.
It has now been four decades since a group of children witnessed a UFO outside their school in Wales.
Recently declassified CIA files detail reports of UFOs over India, Nepal and Bhutan back in 1968.
The newly declassified video was filmed by a military helicopter that encountered a UFO while on patrol.
A former security police officer has described the object he witnessed that night as 'not of this world'.
The anomalous object was spotted in front of the Sun in an image taken by NASA's STEREO satellites.
The bright green object made headline news after it was spotted flashing across the sky in eastern Japan.
The remote-operated aerial drone managed to cause quite a stir in the cities of Vienna and Graz.
The town has long refused to lift a ban on UFOs following a mysterious encounter over 60 years ago.