From Mercury’s Orbit to Light Bending The power of Einstein’s framework is perhaps most clearly seen in its explanation of phenomena that Newtonian physics could not resolve. The Core Principle: Spacetime Curvature To grasp general relativity, one must first visualize the fabric of spacetime—a seamless four-dimensional continuum merging the three dimensions of space with the dimension of time.
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General relativity accounted for this discrepancy perfectly, attributing it to the curvature of spacetime caused by the Sun’s immense mass. The theory challenges our intuitive notions of reality, forcing us to accept that space is dynamic, malleable, and intertwined with time.
Furthermore, the theory predicts that light itself bends when passing through a gravitational field, a prediction confirmed during a solar eclipse in 1919 when starlight was observed curving around the obscured Sun. The theory also suggests the reality of gravitational lensing, where galaxies warp the light of objects behind them, acting as cosmic magnifying glasses.
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Other objects, such as planets or moons, move along the curves created by this distortion, appearing to us as if they are being pulled by gravity. Gravitational Time Dilation A direct consequence of spacetime curvature is the phenomenon of gravitational time dilation.
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