* Star Color and Temperature: A star's color is a direct indicator of its surface temperature.
* Blue stars are the hottest, with surface temperatures exceeding 25,000° Celsius (45,000° Fahrenheit).
* White stars are a bit cooler, around 10,000° Celsius (18,000° Fahrenheit).
* Yellow stars like our Sun are about 5,500° Celsius (10,000° Fahrenheit).
* Red stars are the coolest, with surface temperatures ranging from 3,500° Celsius (6,300° Fahrenheit) down to 2,000° Celsius (3,600° Fahrenheit).
* Why Red? Red stars emit most of their light in the red part of the visible spectrum. This is due to their lower surface temperatures. Imagine a piece of iron heated in a forge. As it gets hotter, it glows red, then orange, yellow, and eventually white-hot. Stars are the same, but they're emitting light, not heat.
Examples of Red Stars:
* Betelgeuse (in the constellation Orion) is a red supergiant star and one of the largest and brightest stars visible in the night sky.
* Antares (in the constellation Scorpius) is another red supergiant star that shines brightly in the summer sky.
Let me know if you'd like to learn more about stars!
