If we look at Stonehenge from bird's eye view we see concentric circle around it. Recently a mathematician found out that they represent each planets of our solar system. So Stonehenge is a model of our solar system. How our ancestor did built the structure. How did they move such massive rocks which are found very far away from Stonehenge? Did they get help from extra terrestrial life? Some legends say our ancestors got the knowledge to levitate the rocks from alien!!