Albert Einstein’s theory of general relativity is tested (later confirmed) by Arthur Eddington and Andrew Claude de la Cherois Crommelin.

Albert Einstein’s theory of general relativity, published in 1915, fundamentally changed how we understand gravity. Instead of viewing gravity as a force between two masses (as Newton did), Einstein proposed that mass and energy warp the fabric of spacetime, and that this curvature tells objects how to move. So, in this model, planets orbit stars not because they’re pulled by a force, but because they’re following curved paths in warped spacetime. One of the most famous predictions of general relativity is the bending of light around massive objects—a phenomenon confirmed during a solar eclipse in 1919, catapulting Einstein to global fame. The theory also predicts black holes, gravitational time dilation (where time moves slower near massive bodies), and gravitational waves, all of which have been observed and confirmed with modern technology. It’s still the gold standard for understanding large-scale structures in the universe.