Gravity

Imagine sitting under a tree when an apple suddenly bonks you on the head. Why didn’t it float up? That’s gravity.

Gravity is an invisible force that pulls objects toward each other. Anything with mass and volume has gravity.

Long ago, scientist Isaac Newton discovered that gravity keeps planets, moons, and stars from drifting away.

Earth’s gravitational pull keeps you from floating into space. It’s also why your backpack feels heavy and why a ball falls when you throw it.

The weight of an object is the result of the gravitational pull acting on it. The more mass an object has, the stronger its gravitational pull.

But guess what? The Sun’s gravity is much stronger than Earth’s. It’s so powerful that it keeps all the planets, including Earth, orbiting around it.

Similarly, Earth’s gravity holds the moon in orbit, preventing it from floating away.

The strength of gravity also depends on distance. For example, the moon is more affected by Earth's gravity than the Sun's because it is much closer to Earth.