Blue:
* Hottest: These are the hottest stars, with surface temperatures of over 25,000 degrees Celsius.
* Young: Blue stars are typically young and massive, burning through their fuel quickly.
* Examples: Rigel (Orion), Spica (Virgo)
White:
* Moderate temperature: With surface temperatures between 7,500 and 10,000 degrees Celsius, white stars are considered to be of moderate temperature.
* Examples: Sirius (Canis Major), Vega (Lyra)
Yellow:
* Sun-like: Our Sun is a yellow star, with a surface temperature of about 5,500 degrees Celsius.
* Middle-aged: Yellow stars are considered to be middle-aged stars, with a lifespan of several billion years.
* Examples: Our Sun, Procyon (Canis Minor)
Orange:
* Cooler: These stars have surface temperatures between 3,500 and 5,000 degrees Celsius, making them cooler than yellow stars.
* Red Giant Phase: Many orange stars are in their red giant phase, meaning they are nearing the end of their lives.
* Examples: Arcturus (Boötes), Aldebaran (Taurus)
Red:
* Coolest: These are the coolest stars, with surface temperatures below 3,500 degrees Celsius.
* Old: Red stars are often old and less massive than other stars.
* Examples: Betelgeuse (Orion), Antares (Scorpius)
Important Note: The colors we perceive are just a small part of the light spectrum that stars emit. We see them as different colors because our eyes are most sensitive to yellow-green light. Scientists use specialized instruments to measure the entire spectrum of light emitted by stars, which provides much more detailed information.
