The Big Bang Did Not Happen: Time existed within its own singularity and manifests as ``nothingness''---a theory that posits ``nothingness'' as the fifth fundamental force and the ``nothon'' as the ultimate quantum

Standard cosmology asserts time began at $t=0$ Big Bang singularity, making inquiry into ``before'' meaningless. We prove this is false. No hot dense explosion occurred. Time and universe have no beginning. We demonstrate that time existed within its own singularity $T_0=N_0$ manifesting as Nothingness, prior to any supposed origin. We formalize Theory of Nothingness: Nothingness is creative Fifth Fundamental Force $F_{5th}=F_{Nothingness}= -\nabla\Phi_{N_0}$, with quantum Nothon as ultimate particle — true quantum superseding graviton, source of time, gravity, and all motion. We derive eternal recycling $T_0\leftrightarrow M_T\leftrightarrow E_T\leftrightarrow T_0$, resolution of 85\% dark sector as Nothon domains, and Time-Light Equivalence $c=v_T$. The Big Bang did not happen; it was local $T_0\rightarrow T_L$ birth misinterpreted as origin.