How does general relativity explain gravity and the universe?

General relativity explains gravity by showing how mass bends the space around it, like a trampoline.

Imagine you have a big, soft trampoline. If you put a heavy ball in the middle, the trampoline sags. Now, if you roll a smaller ball near it, the smaller ball rolls toward the heavier one, not because something is pulling it, but because the space around the heavy ball is curved.

This is how gravity works: big things like planets and stars make space curve, and other things follow that curve, just like balls on a trampoline. That’s why we stay on Earth, Earth curves the space around us, and we move along that curve.

General relativity also helps explain how the universe works. It shows that space itself can stretch and shrink over time. This idea helped scientists understand how the universe began with a big bang, like blowing up a balloon, and everything on it moves apart as the balloon grows bigger.

So gravity isn’t just something we feel, it’s a shape in space made by mass. And that shape helps us understand why things move and how the whole universe behaves!