Officials have launched an investigation after drones were sighted near seven nuclear power plants.
Experts have been trying to learn the purpose of large stone circles found across the Middle East.
The images that adorn the enigmatic Phaistos Disc have been puzzling archaeologists for decades.
Archaeologists have uncovered a number of artefacts during excavations of the enigmatic burial site.
There is now believed to be something mysterious lurking below the surface of Saturn's moon Mimas.
Workers at a treatment plant in New Jersey were left mystified when a metal plate fell from the heavens.
Reports and rumors about a legendary beast prowling the Australian bush have persisted for years.
Long lost jewelery that belonged to the best-selling novelist has been found in a secret lockbox.
A mysterious entity has been sighted at Cannock Chase in England for the first time in almost 30 years.
A historian came across the pattern on Google Earth while conducting research on the Knights Templar.
Author Russell Edwards believes he has determined the identity of the infamous 19th century killer.
Privacy concerns were raised this week after it was revealed that the towers had no known operators.
A 4,000-year-old mystery has finally been solved thanks to a hosepipe being a little on the short side.
A team of researchers has finally managed to explain how such large boulders can move all by themselves.
Back in the 1930s a terrifying creature was widely reported to be prowling the wilds of Great Britain.
An incident involving a strange glowing silt pond would go on to spark a mystery spanning four decades.
A farmer may hold the key to the disappearance of Victorian pilot Fred Valentich in October 1978.
Authorities have been attempting to identify a cat-like creature spotted on CCTV camera in Norwalk.
Experts have been trying to identify the origins of a ship found buried beneath the World Trade Center.
Police officers had been called in to investigate after strange dolls started appearing on doorsteps.