Here's why:
* The Sun is our star. It's the closest star to Earth.
* Stars are incredibly far away. The nearest star to our Sun is Proxima Centauri, which is about 4.24 light-years away. A light-year is the distance light travels in one year, which is a massive distance.
* The Sun is about 93 million miles (150 million kilometers) from Earth. This distance is relatively small compared to the vast distances between stars.
So, while all stars are incredibly far away, the Sun is our closest star, making it much closer to Earth than any other star.