* Blackbody Radiation: Stars, like all objects, emit electromagnetic radiation due to their temperature. This is known as blackbody radiation.
* Peak Wavelength: The hotter the object, the shorter the wavelength of the peak radiation it emits. This means:
* Hotter stars emit more blue and ultraviolet light.
* Cooler stars emit more red and infrared light.
* Visible Spectrum: Our eyes are most sensitive to visible light, which is why we see stars as different colors.
Here's a general guide:
* Blue Stars: The hottest stars, often around 30,000 Kelvin or higher.
* White Stars: Very hot stars, around 10,000 to 30,000 Kelvin.
* Yellow Stars: Our Sun is a yellow star, with a temperature around 5,500 Kelvin.
* Orange Stars: Somewhat cooler than our Sun, around 3,500 to 5,000 Kelvin.
* Red Stars: The coolest stars, typically below 3,500 Kelvin.
Important Note: The color of a star can also be affected by factors like dust and gas between the star and Earth, but surface temperature is the primary determinant.
