What if peace isn't a moral ideal... but a measurable state of stability? Peace As A Science reframes peace from aspiration to architecture - not as passivity or the absence of conflict, but as the stabilisation of complexity. Drawing on neuroscience, systems theory, biology, physics, and lived human experience, this book explores a radical but grounded idea: Peace behaves like a coherent field. It can be observed in regulated nervous systems, traced in feedback loops and probability, strengthened through applied principles, and scaled - from the body to relationships, from culture to governance. Through a peace lens, we reframe mental health as adaptive intelligence under rupture, neurodivergence as configuration, and justice as restorative rather than revenge - extending from identity through to education, healthcare, media, technology, and war. We move from inner experience to large-scale systems, asking how stability forms, how it breaks, and offering practical tools to repair and build peace. It is rigorous, practical, occasionally funny, and deeply human. Peace is dimensional and we explore how time travel might not require a machine, but awareness - because peaceful choices shift probability and alter trajectory. And yes, pop culture is part of the laboratory - because sometimes Yoda explains regulation better than a textbook. Because if peace has structure, it can be studied. If it can be studied, it can be practiced. And if it can be practiced, it can be built.