I feel like part of the cultural fascination with flying saucers is that we intuitively feel like it <i>should</i> be possible for someone with advanced technology to levitate without expending power.<p>We are starting to get there, with quantum locking, which can levitate a type-II superconductor relative to a supporting magnetic field.<p><a href="https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=Ws6AAhTw7RA" rel="nofollow">https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=Ws6AAhTw7RA</a><p><a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Flux_pinning" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Flux_pinning</a><p>I wonder if it would be physically possible to utilize the Earth&#x27;s extremely weak magnetic field to support any meaningful mass?