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Their method of propulsion, she explains, was "anti-gravitational" based on a system analogous to that of laghima (vril, prana, vital airs?), the unknown power of the ego existing in our human physiological makeup, "a centrifugal force strong enough to counteract all gravitational pull."
According to yogis, laghima enables a person to levitate. Dr. Reyna explains that onboard these machines, which were called Astras in the text, ancient Indians could have sent a detachment of troops onto any planet, according to the document, which is thought to be thousands of years old.