How Does General Relativity: The Curvature of Spacetime Work?

Spacetime is like a trampoline, when something heavy sits on it, it bends, and other things roll toward it.

Imagine you're playing with marbles on a big, soft trampoline. If you put a heavy marble in the middle, the trampoline stretches around it, making a sort of "dent." Now, if you roll another marble near that dent, it doesn’t just sit still, it starts to move toward the heavy marble, as if it were being pulled by an invisible hand.

Spacetime is like that trampoline. Mass (like planets or stars) bends spacetime around them, and other objects, like people, cars, or even light, follow those curves. That’s why we feel gravity: it's not a force pulling us down, but the path our motion naturally takes on a bent surface.

Think of spacetime as a stretchy fabric made of time and space together. When something big, like Earth or the Sun, is in there, it stretches that fabric around itself. The bigger the object, the more it bends spacetime.

When you jump up, you're not fighting gravity, you're just moving along the curve of spacetime. It’s like rolling a marble across the trampoline: it follows the path made by the dent, not because it's being pulled down, but because that’s where the surface leads it. Spacetime is like a trampoline, when something heavy sits on it, it bends, and other things roll toward it.

Imagine you're playing with marbles on a big, soft trampoline. If you put a heavy marble in the middle, the trampoline stretches around it, making a sort of "dent." Now, if you roll another marble near that dent, it doesn’t just sit still, it starts to move toward the heavy marble, as if it were being pulled by an invisible hand.

Spacetime is like that trampoline. Mass (like planets or stars) bends spacetime around them, and other objects, like people, cars, or even light, follow those curves. That’s why we feel gravity: it's not a force pulling us down, but the path our motion naturally takes on a bent surface.