Planets are like balls on a string. The sun is the hand holding the string, and the planet keeps moving in a circle because it’s already going fast. If the string was cut, the ball would fly off, just like if gravity wasn’t there, planets might drift away or fall into the sun.
Why They Don’t Fall In
The sun pulls on the planet with gravity, but the planet is also moving forward. This balance keeps it going in a loop instead of falling straight down. It’s like when you swing around in circles, gravity pulls you toward the center, but your motion keeps you from falling all the way.
Examples
- A ball thrown high into the air follows a curved path before falling back down, like a planet moving around the sun.
- Swinging around on a swing set keeps you from falling straight down, just like planets stay in orbit.
- If gravity was gone, Earth would drift off into space instead of staying near the sun.
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See also
- How Does a Planet Stay in Orbit Around a Star?
- How Do Rockets Escape Earth's Gravity?
- How Does ‘Gravity’ Affect the Shape of the Earth?
- What Causes a ‘Black Hole’ and Why Is It Invisible?
- What Causes a ‘Black Hole’ in Space?
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