Space-time curvature

Space-time curvature refers to how gravity is the result of massive objects, like planets or stars, bending the fabric of space and time around them. Think of space-time as a flexible sheet; when a heavy object sits on it, the sheet dips or curves. Smaller objects then move along these curves, which appear as gravitational attraction. This curvature explains why planets orbit stars and why objects fall toward Earth—because they're following the curved paths in space-time created by mass and energy, much like rolling a marble around a dip in a trampoline.