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So far, no one can explain what these brands are and what their origins.

Astronomers have discovered that invisible structures generated by gravitational interactions in the Solar System have created a "Space Superhighway" network.

Scientists believe they may have glimpsed a parallel universe crashing into our own.

Although they are a great archaeological find, the origin of the stone spheres remains a mystery to mankind.

The Bohol Hills are one of the main tourist attractions in the Philippines and their unexplained formation is surrounded by legends.

For the first time in 2,000 years, tourists will have access to the ancient city of Hegra in Saudi Arabia.

In the days leading up to the Chernobyl disaster, workers at the nuclear plant claimed to have seen a creature known as the “Black Bird”.

Google Mars enables interactive virtual exploration of different regions of the Red Planet.