The US military's secretive space plane is due to launch on May 16th with a cargo full of experiments.
A unique form of singing that produces two tones simultaneously has remained an enigma for many years.
Access to the wreck of the world-famous vessel, which sank in 1912, has long remained a point of contention.
Footage of the unusual cephalopod was captured in the Pacific depths by the Exploration Vessel Nautilus team.
A student in Glasgow has deciphered a shorthand code that has remained an enigma for generations.
A mysterious room in Darwin's former Reserve Bank building has remained firmly locked for decades.
The enormous circle of ice formed in freezing weather in the Presumpscot River on Tuesday afternoon.
Conservationists have uncovered stone carvings dating back 600 years on the tomb of a medieval bishop.
Hunter and fisherman Greg Strand captured footage of the colorless animal in the woods earlier this month.
Authorities in Maine were left perplexed recently when an ATM machine was found miles from anywhere.
Tia Wilson of Durham, Maine captured the eerie image on a game camera she had set up in her garden.
In 1917, two English schoolgirls claimed to have photographed fairies at the bottom of their garden.
Hair belonging to the first ever President of the United States has been found in an 18th-century almanac.
A major new discovery has revealed tens of thousands of hidden pyramids, houses, defence works and more.
The 'Tolkienesque' landscape is made up of 26 underwater volcanoes buried beneath seabed sediment.
Considered to be a 'living fossil', the frilled shark has remained unchanged for over 80 million years.
An Oxford University professor believes he may have pieced together the identity of Leonardo's mother.
A bizarre encounter by six schoolchildren in 1979 is the subject of a new investigation by Dr Simon Young.
Astronaut Scott Kelly spent 340 days aboard the space station while his twin brother remained on Earth.
A storm off the coast of Germany has strewn large numbers of Kinder eggs all along the shoreline.