The historic stone has been used during the coronation of British monarchs for centuries.
The signal had been sent as part of an exercise to see how we would fare if a genuine alien signal was ever picked up.
The cryptic and seemingly incomprehensible series of words had baffled cryptographers for years.
The intriguing find has been likened to something out of Dan Brown's novel 'The Da Vinci Code'.
Previously unseen letters and numbers have been found on a metal panel thought to have come from Earhart's plane.
A major new report has found an 'unequivocal' link between human activities and climate change.
The final two ciphers created by the notorious serial killer may have been solved by an amateur codebreaker.
Divers searching for fishing nets have uncovered one of the infamous code machines used during World War II.
A pigeon carrying a 'coded message' was recently captured by authorities in India on suspicion of spying.
Silent footage filmed during the Second World War shows a site connected to Britain's Enigma codebreakers.
'Codename Rendlesham' will assert that the famous UFO incident has become something of a legend.
A visitor to a museum in Canada recently guessed the code to a safe that hadn't been opened in decades.
The live, lab-made microbe, which has a fully synthetic DNA code, is the first of its kind ever created.
A student in Glasgow has deciphered a shorthand code that has remained an enigma for generations.
A code used by a Spanish king to communicate with his top military commander has finally been deciphered.
Scientists at the University of Alberta have applied artificial intelligence to the long-running mystery.
A hidden code may have finally lifted the lid on the mysterious hijacker known as DB Cooper.
Code-named Zuma, the secretive satellite was launched in to orbit aboard a Falcon 9 rocket on Sunday night.
A mysterious deer-hide manuscript from Mexico has revealed a series of hidden storytelling images.
A peculiar landscape of dots and dashes has been picked up by NASA's Mars Reconnaissance Orbiter.