In the relativistic condensate, the condensate is a scalar field that is relativistically invariant. The direct spacetime formulations make manifest that the Maxwell equations are relativistically invariant. This results in a relativistically invariant theory in any spacetime dimension. Some particle characteristics are relativistically invariant (charge, spin, and magnetic moment). Dynamical friction is, therefore, unimportant for objects that move relativistically, such as photons. For black holes, the surface gravity must be calculated relativistically. This provided strong evidence that GRBs are relativistically expanding explosions. Relativistically moving objects are beamed due to a variety of physical effects.