Back in 1992, two climbers who set out to tackle the Swiss Alps never returned, leading to a decades-spanning mystery.
The latest investigation of the Durupinar Formation near Mount Ararat has revealed that it may consist of more than just solid rock.
A woman had been putting out her bins in Northampton when she spotted something that made her run away in fright.
The upper stage of a Falcon 9 rocket smashed into the surface of the Moon around two weeks ago.
The horrific prospect of a killer robot careening toward you at superhuman speed is now one step closer to reality.
After being postponed last year, the expedition to search for the wreckage is expected to go ahead in a few months' time.
A gargantuan, bright red spot in the early universe has turned out to be something that nobody has ever seen before.
As expected, the entire planet's gravity did not 'switch off' for a period of seven seconds earlier on this week.
A woman and her husband came across a large unexplained bipedal creature estimated to be around 9ft in height.
A peculiar object resembling a small tripod is present in one photograph of a particular location, but then not in another.
An unusual new species of fish has been discovered in the waters of a pitch-black cave beneath a US military base.
The ninth sighting of the enigmatic creature has been recorded by the Official Loch Ness Monster Sightings Register.
As the iconic dwarf planet moves further away from the Sun, its atmosphere is beginning to change.
A man dressed as the Grim Reaper was apprehended by police recently after making a nuisance of himself at a hospital.
A man who has spent years attempting novel ways to extend his life has revealed that he is battling an incurable health condition.
The latest selection of files includes a cache of 12 previously unseen videos of mystery objects sighted around the world.
A new analysis of the bird's brain has revealed that the phrase 'dumb as a dodo' is likely completely baselesss.
The controversial observations indicated the presence of large unidentified objects measuring several miles across.
A space rock that smashed through the roof of a house in New Jersey has been found to contain something quite unexpected.
The man was detained by police after investigators identified him as the culprit in a series of macabre acts.