The ten headed Rakshasa (demon) Ravana used his Pushpaka Vimana (The bird shaped flying machine) to traverse across the world. He stole it from his half brother Kubera, who was in turn gifted with this technological marvel by Vishwakarma, the architect of the Gods on the advise of Lord Shiva. Were our great ancestors spiritually and technologically far more advanced? You will find reference of this in my story ‘The Last War’, a mythological science fiction story.
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