Spacetime curvature
Okay kiddo, imagine you're playing with a trampoline. If you put a heavy ball in the middle, it will sink down and cause the trampoline to curve around it. That's kind of what spacetime is like.
Now imagine that the heavy ball is a really heavy object, like a planet, and the trampoline is spacetime. The planet causes a curve in spacetime around it. This curve is called spacetime curvature.
The heavier the object, the more spacetime curvature it causes. This curvature affects everything that moves through spacetime, like light and other planets. They will follow a curved path around the heavy object, kind of like the way a marble rolls around the edge of the trampoline.
This is important because scientists use the concept of spacetime curvature to explain gravity. Gravity is what makes things like apples fall from trees or keeps planets orbiting around stars. Objects with more mass cause more spacetime curvature, which in turn causes more gravity. So, the curvature of spacetime helps explain why things move the way they do in the universe.
Now imagine that the heavy ball is a really heavy object, like a planet, and the trampoline is spacetime. The planet causes a curve in spacetime around it. This curve is called spacetime curvature.
The heavier the object, the more spacetime curvature it causes. This curvature affects everything that moves through spacetime, like light and other planets. They will follow a curved path around the heavy object, kind of like the way a marble rolls around the edge of the trampoline.
This is important because scientists use the concept of spacetime curvature to explain gravity. Gravity is what makes things like apples fall from trees or keeps planets orbiting around stars. Objects with more mass cause more spacetime curvature, which in turn causes more gravity. So, the curvature of spacetime helps explain why things move the way they do in the universe.