The article suggests that to move a particle in space requires a minimum energy of 1.4 pico-electron volts per neutron. If one were to imagine these energy states as "orbitals", then this is how much energy a neutron needs to jump upwards to the next highest orbital. The height between these orbitals might be different depending on whether the neutron is on Earth or on a planet the size of Jupiter.

General relativity predicts that the higher the gravitational force the more space contracts and the more time dilates, so on Jupiter one would expect these orbitals to be much closer together. Nevertheless it may take precisely the same amount of energy to jump between them. This makes sense intuitively.

The question is what form does that energy take? Why is there a minimum? Is this the energy of the "graviton" ? Can particles be remotely induced to either absorb or release this type of energy - hence gravity-wave propulsion?