What Is Gravity? Newtonian Gravity vs General Relativity?

Gravity is what makes things fall down and keeps us stuck to the Earth, just like a magnet keeps your fridge notes from flying away.

Imagine you're playing with two balls on a trampoline. If you put one ball in the middle, it makes the trampoline bend. The other ball rolls toward it because of that bend, Newtonian gravity is kind of like this trampoline: heavy things pull lighter things toward them, and we can describe how strong that pull is with math.

But now imagine the trampoline isn’t just a simple surface. Imagine it’s made of rubber that stretches and bends in really cool ways depending on how much weight you put on it, and even time moves slower near the heavier ball! That's general relativity: gravity isn't just a force, but more like a bend in space and time itself.

Think of Earth as a giant trampoline. When you jump, you're not fighting against a straight path, you’re moving along a curved one. The Moon is like a ball that's been gently pulled into orbit because Earth’s gravity bends the space around it.

So, Newton saw gravity as a pull; Einstein showed us that gravity is a bend in space and time, both are true, just seen from different perspectives! Gravity is what makes things fall down and keeps us stuck to the Earth, just like a magnet keeps your fridge notes from flying away.

Imagine you're playing with two balls on a trampoline. If you put one ball in the middle, it makes the trampoline bend. The other ball rolls toward it because of that bend, Newtonian gravity is kind of like this trampoline: heavy things pull lighter things toward them, and we can describe how strong that pull is with math.

But now imagine the trampoline isn’t just a simple surface. Imagine it’s made of rubber that stretches and bends in really cool ways depending on how much weight you put on it, and even time moves slower near the heavier ball! That's general relativity: gravity isn't just a force, but more like a bend in space and time itself.