This question naturally dominates third dimensional consciousness. By intent, it is an instruction to close yourself off from your Inner Knowing.

Tell me, would you ask this question to Yeshua, Buddha or Mohammed? If you wouldn't, then know that we, as all of Ascending Humanity are becoming the new prophets and Christs of our era. For the ascending human finds all truth in his/her heart. THERE is your proof.

Meanwhile, Earth-science is moving ever closer to esoterics, not the other way around. String theory confirms concepts the Mystery Schools have been teaching for aeons. So that the head may understand (to a degree) the wisdom and knowledge of the heart. In fact, Earth-science has not fundamentally moved beyond "flat-Earth thinking", because scientific suppression is still as intense today as it was during the times of Galileo and Giordano Bruno.

Anti-gravity follows naturally from late 19th century classical electrodynamics. Anyone experimenting with high voltages (let's say half a million) will experience that. One reason why Nazism took over in Germany in the 1930s was to put a halt to the over a 1000 research groups dealing with subjects like anti-gravity and zero-point energy. The second law of thermodynamics (that energy conversion always goes with heat loss) only serves the fossil fuel industry.