Gravity in Arrival: Can It Be Simulated on Earth?

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CASPIDE
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Dears,

In the film the Arrival, of Denis Villeneuve, the alien ship apparently subjugates the terrestrial gravity. It's one thing to simulate gravity in space, another thing would be to simulate a gravitational system apart on Earth. Is there at least a theoretical possibility for this? How?

The premise is that to simulate a gravitational field equivalent to that of Earth, a system should have the same mass as Earth. So the proposal of the film would be no more than pure fantasy or speculation!
 
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Magnets can make things "float", MagLev trains, for instance. What the Heptapods did was, of course, well beyond that.
 
CASPIDE said:
Dears,

In the film the Arrival, of Denis Villeneuve, the alien ship apparently subjugates the terrestrial gravity. It's one thing to simulate gravity in space, another thing would be to simulate a gravitational system apart on Earth. Is there at least a theoretical possibility for this? How?

The premise is that to simulate a gravitational field equivalent to that of Earth, a system should have the same mass as Earth. So the proposal of the film would be no more than pure fantasy or speculation!

Maybe the ship can emit equations that can change the Einstein Field Equations and change spacetime curvature to do what it can do? Remember gravity is not a force.. but just equations of differential manifold (creating spacetime curvature)
 
There is no credible theory that allows for antigravity. There's nothing more to be said here.