Einstein's General Theory of Relativity

<a href="/article/albert-einstein">Albert Einstein</a>'s General Theory of Relativity is a revolutionary theory of gravity that describes it not as a force, but as the curvature of <a href="/article/spacetime">spacetime</a> caused by mass and energy. It explains how massive objects warp the fabric of the universe, dictating how other objects move and how light travels. This theory has profoundly shaped our understanding of the cosmos, from <a href="/article/black-hole">black holes</a> to the <a href="/article/big-bang">Big Bang</a>.