This 41-page book is Dr. Lang's third and most condensed book in a series of books that relate to his revolutionary and surprisingly simple new unified theory of physics. This theory is math-and-physics-based, in contrast to current physics theory which is solely math-based. Virtually all of Albert Einstein's assumptions are reversed. Space is no longer an empty vacuum; space cannot warp with time; the speed of light varies; and mass, length, and time can no longer change with speed. This theory is based on classical fluid dynamics. Physics is unified by replacing its three fields (of gravity, electromagnetics, and quantum mechanics) by a single new field consisting of "spatial fluid." The 25 mysteries and their solutions relate to unification, time, the speed of light, photons, neutrinos, electrons, positrons, electric charge, protons, neutrons, isotopes, mass, energy, nuclear strong and weak forces, nuclear pairing, nuclear orbiting, quantization, quantum mechanics, gravity, the nature of our universe, dark matter and energy, and superluminal travel. A century of modern physics is replaced by this paradigm change in physics. Relativity is now obsolete. All of physics finally becomes both mathematically and physically understandable.