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The secrets revealed of the incredible city in the clouds built by the Incas.

The asteroid's strange orbit may be the work of the gravity of an unknown planet.

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

A comet recorded by the Aztecs appears to have foreshadowed the arrival of the Spanish conquerors.

It is believed that during the day this deity emerged from the water and taught the human race arts, sciences and writing.

The biohybrid robot is half electronic and half organic, and could be the first step towards something bigger.

The site is so impressive that it became known as the "Pompeii" of America.

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