Here's why:

* Temperature and Color: The color of a star is directly related to its surface temperature.

* Spectral Classes: Astronomers classify stars based on their temperature and spectral characteristics using a system called the Harvard Spectral Classification.

* White Stars: White stars fall within the spectral class A, with temperatures ranging from about 7,500 to 10,000 degrees Celsius.

Examples of White Stars:

* Sirius: The brightest star in the night sky, is a white star.

* Vega: A prominent star in the constellation Lyra, is also a white star.