Here's why:

* Size: Earth is a planet with a diameter of about 12,742 kilometers. Stars are giant balls of hot gas, and even the smallest stars are significantly larger than Earth. The smallest stars, called red dwarfs, can be 10 to 100 times the size of Earth. Our Sun, a medium-sized star, is about 109 times wider than Earth.

* Density: Stars are much denser than planets, meaning they have more mass packed into a smaller space.

It's like comparing a pebble to a giant balloon. The pebble (Earth) is tiny compared to the balloon (a star).