Physics of mechanics is the only real physics repeatedly proven correct over the past three-plus centuries. It teaches that matters having masses and relative motions produce all phenomena and predicted the presence of matters (aether) to produce all universal phenomena. Changing from long-time failure in finding aether to denying aether concept has led the scientific community to develop and accept religion-like no-aether theories including modern physics and modern cosmology. We have been in an era of religious pseudo-science for a century already. Finding aether disproves all no-aether theories, offers a broad-range understanding of all universal phenomena and the universe. Hopefully, the book will bring the world back to real science.