Physics is the fundamental science that explores the nature of matter, energy, and the forces governing the universe. It seeks to explain everything from the smallest subatomic particles to the vastness of cosmic structures. Rooted in observation and experimentation, physics relies on mathematical models to predict and describe natural phenomena. Key branches include classical mechanics, thermodynamics, electromagnetism, quantum mechanics, and relativity. Physics drives technological advancements, from electronics to space exploration, and deepens our understanding of reality. Whether studying motion, light, gravity, or the behavior of particles, physics provides the foundational principles that shape modern science and engineering. Its discoveries continue to push the boundaries of human knowledge, revealing the underlying laws that define the physical world.