They can be tested, at least partially, by ultra-high energy cosmic ray experiments like the Pierre Auger Observatory.
Lorentz force | Max Lorentz | Hendrik Lorentz | Pare Lorentz | Lorentz–Heaviside units | Lorentz group | Covariance and contravariance of vectors | Lorentz National Park | Lorentz Dietrichson | Covariance and contravariance | Covariance | covariance |