Spacetime is like a trampoline, when something heavy is on it, it bends, and things nearby move toward it.
Imagine you have a big trampoline, nice and flat. If you put a heavy ball in the middle, the trampoline sags around it. Now, if you roll a smaller ball near the heavy one, it will curve toward it, not because of magic, but because the trampoline is bent.
In general relativity, spacetime is like that trampoline. When something really big and heavy, like a planet or a star, is in spacetime, it warps it, just like the heavy ball made the trampoline sag. Other things nearby, like people or satellites, follow the curve of this warped spacetime, which makes them move toward the heavy object.
Gravity is the Curve
Think about walking on a curved surface: you might not feel the curve, but your path changes because of it. That’s how gravity works, not as something pulling you from above, but as a curve in the fabric of spacetime that guides your motion. It's like rolling down a hill, you're just following the shape of the world around you! Spacetime is like a trampoline, when something heavy is on it, it bends, and things nearby move toward it.
Imagine you have a big trampoline, nice and flat. If you put a heavy ball in the middle, the trampoline sags around it. Now, if you roll a smaller ball near the heavy one, it will curve toward it, not because of magic, but because the trampoline is bent.
In general relativity, spacetime is like that trampoline. When something really big and heavy, like a planet or a star, is in spacetime, it warps it, just like the heavy ball made the trampoline sag. Other things nearby, like people or satellites, follow the curve of this warped spacetime, which makes them move toward the heavy object.
Examples
- A person standing near a massive object feels time passing more slowly than someone far away.
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See also
- What is Gravity isn’t really a force?
- How does the curvature of spacetime create gravity?
- How does spacetime curve?
- How does general relativity explain gravity and the universe?
- What causes gravity according to the curvature of spacetime?