Parity symmetry is a fundamental principle in physics, making its violation a key indicator of new physics beyond the standard models. Recent studies have reported 3–7σ indications of parity-violating signatures in the large-scale distribution of galaxies, sparking growing interest in testing parity symmetry in the early Universe. In this talk, I will discuss the detectability of parity-violation in the early universe using late-time galaxy spins. Our analysis introduces a novel approach to generate viable but strongly parity-violating initial conditions. Utilizing N-body simulations, we find that a substantial fraction of primordial parity asymmetry survives in the late-time galaxy spins. I will discuss the cosmological implications of our findings and conclude with future opportunities from upcoming galaxy surveys.
