Background. NASA experimented with High Magnetic Fields to simulate zero gravity for experiments on plantsPaul and coworkers found that the magnetic field itself, not just the lack of gravity, was causing stress on the plants. 18.9 T. Control. Paul 2005. . Hypothesis. Strong magnetic fields generate subtle perturbations of biomolecules due to the structural diamagnetic anisotropy of the molecules, causing a disruption of normal biochemical function.