How does spacetime curve?

Spacetime curves when mass pushes and pulls on it, just like a trampoline bends under your weight.

Imagine you're on a big, soft trampoline. When you jump up and down, the surface stretches and bends around you. That’s how spacetime works, it's like that trampoline, but for everything in the universe, including you, the moon, and even light.

Think of a heavy ball, like a bowling ball, placed on the trampoline. It pushes down and makes a deep curve around it. That’s what happens with planets and stars, they make big curves in spacetime. When something moves near that curve, like a satellite or another planet, it follows the bend, just like you bounce back up after jumping on the trampoline.

Even light can’t escape the curve! Imagine shining a flashlight across the trampoline, instead of going straight, the beam bends around the ball. That’s why we see gravitational lensing, where light from distant stars or galaxies bends as it passes near massive objects like black holes.

Spacetime is just the stage on which everything dances, and mass is the one doing the pushing!