How does the theory of relativity revolutionize our understanding of space, time, and gravity? Discuss the implications of Einstein's equations in predicting phenomena like gravitational lensing and time dilation. Explore the fundamental concepts of spacetime curvature and the equivalence principle. Additionally, elucidate the role of mass-energy equivalence in shaping modern physics theories. Finally, analyze the experimental evidence supporting these theoretical frameworks and their practical applications in fields like GPS technology and cosmology