Curved Spacetime

Curved spacetime is a key concept in Einstein's General Relativity, which describes how gravity works. Instead of thinking of gravity as a force pulling objects together, it suggests that massive objects, like planets and stars, bend the fabric of spacetime around them. Imagine placing a heavy ball on a rubber sheet; the sheet curves around the ball. When smaller objects, like satellites or planets, move near this curvature, their paths bend, which we perceive as gravitational attraction. This explains why planets orbit stars and why light can bend around massive objects, a phenomenon observed in the universe.