No, stars are much larger than Earth. Even the smallest stars, known as red dwarfs, are still many times larger than our planet.

Here's why:

* Nuclear Fusion: Stars are giant balls of hot gas that generate energy through nuclear fusion. This process requires immense pressure and temperature, which only occur in objects with significant mass.

* Gravity: The immense gravity of a star pulls its own material inwards, creating the necessary pressure for fusion.

* Size Comparison: The smallest red dwarfs are about 10-20% the size of our Sun, which is already about 109 times larger than Earth.

So, while some stars are smaller than our Sun, they are still significantly larger than Earth.