2 years ago

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antigravity anti-gravity viktor grebennikov grebennikov experiment anti gravity grebennikov cavity structure effect Flying platform grebennikov cavity structure effect ufo antigravitation

VIKTOR GREBENNIKOV’S FORGOTTEN ANTI-GRAVITY LEVITATING PLATFORM DISCOVERIES Hidden in Nature
Decades ago a Russian scientist called Viktor Grebennikov made some astounding discoveries,
but strangely enough science academia never really bought into them and they have faded into our lost history.

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