| Star Type O B A F G K M |
| Color Blue Blue Bluish-White White Yellow Orange Red |
| Surface Temperature (Celsius) 25,000 + 11,000 - 25,000 7,500 - 11,000 6,000 - 7,500 5,000 - 6,000 3,500 - 5,000 3,000 - 3,500 |
| Star Types |
| The star types are represented by letters. The colors and temperatures are approximate. The major concept is that cooler temperature stars are red, and the hotter colored stars are blue. The other colors are in between. The Sun is a G-type star. |
Star ---------------- |