Einstein mass–energy equivalence equation E=mc^2 is wrong because does not contains Dark Matter Einstein in 1905 did not formulate exactly the equation E=mc^2 but he said: ’if a body gives off the energy L in the form of radiation, its mass diminishes by L/c^2’. Thus means for Einstein the inertial mass of an object changes if the object absorbs or emits energy. “We do not see Dark Matter energy because at light speed the Dark Matter electron energy is not released” ‘The Ferent factor is the Lorentz factor where the speed of the photon is replaced by the Dark photon speed” “Ferent’s Dark Matter mass-energy equivalence equation: E = md × vp^2” “The electron energy is the sum of the photon energy and the Dark Matter electron energy” “The particle energy E, is the sum of Matter energy and Dark Matter energy: E = Em + Edm” ”Ferent’s mass–energy equivalence equation: E=mc^2 + md × vp^2 “ “We do not see Dark Matter energy because at light speed the Dark Matter energy is not released”