This paper introduces a CPT-symmetric mirror universe model where time and mass emerge from a fundamental pure space state. By extending the Wheeler-DeWitt equation, we propose that physical spacetime and a mirror spacetime coexist in a timeless block universe, maintaining CPT symmetry. The model naturally addresses the matter-antimatter asymmetry, the arrow of time problem, and the emergence of mass from empty space. We derive mathematical evidence supporting this framework by summing the Schrödinger equations for both spacetimes, leading to a timeless total wavefunction. Additionally, we provide conceptual visualizations using analogies such as a broken cup reassembling in reverse time and a moving airplane dynamically exchanging antimatter with the mirror spacetime. This work connects quantum gravity, cosmology, and fundamental physics into a unified framework, offering insights into the origin and evolution of reality from a timeless perspective. 🔹 Key Topics Covered: Timeless block universe & Wheeler-DeWitt equation Emergence of time and mass from pure space CPT symmetry and the mirror spacetime model Resolution of the matter-antimatter asymmetry The arrow of time and its reversal in the mirror universe Mathematical derivations and conceptual illustrations 🔹 Citations & References:This work builds on foundational physics, including the works of Julian Barbour, Bryce DeWitt, John Wheeler, Roger Penrose, and Juan Maldacena. 🔹 Authors & Acknowledgments:We acknowledge the contributions of Gevin Giorbran for his insights into the balanced nature of the universe and its timeless existence. 📜 Keywords: CPT Symmetry, Mirror Universe, Wheeler-DeWitt Equation, Timeless Physics, Block Universe, Quantum Gravity, Emergent Time, Matter-Antimatter Asymmetry