Motion undetected can be done with toroidal full antimatter systems which is a function of the electromagnetic plasma system. So they can move by making frequency oscillation matching with biological computers that detect the exact frequency of the matter in the environment. The base frequency is the vibration frequency of the hydrogen element which is at absolute zero in the interstellar space. 1 dz equals one cycle per unit time, the perception of the spaceship collective is taken as a reference basis for the time in question, because time is different for every consciousness and is not fixed, actually there is no such thing as time.