What causes gravity according to the curvature of spacetime?

Gravity is caused by how mass bends spacetime, like a heavy ball making a dip in a trampoline.

Imagine you're playing on a big, soft trampoline. If you jump on it, it stretches and dips around you. Now imagine putting a heavy ball in the middle of the trampoline, it makes a deep dip. If you roll a small ball near that dip, it will spiral toward the heavy ball, right? That’s how gravity works in space.

Spacetime is like that trampoline, but it's not just up and down; it's also left, right, forward, backward. When something massive, like Earth or the Sun, is in spacetime, it stretches and bends it around itself, creating a kind of "dip" or curve.

Other things, like you, or your toy car, follow that curve, which makes them move toward the massive object. That’s why we fall down when we jump, and why planets orbit the Sun.

So gravity isn’t something that pulls you from above; it's more like a path that spacetime gives you to follow, because of how big things bend it!