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How hot are stars?

    Stars can vary widely in temperature depending on their size and stage in their life cycle. The temperature of a star is typically measured using the Kelvin scale. Here are some general temperature ranges for different types of stars:


    1) Blue Stars (Hotter):

    • Blue stars are among the hottest stars.
    • Temperatures can range from about 10,000 to over 40,000 degrees Celsius (18,000 to over 72,000 degrees Fahrenheit).
    • Examples include some O-type and B-type main sequence stars.

    2) Yellow/White Stars (Intermediate):

    • Our Sun is an example of a yellow star.
    • Temperatures for yellow and white stars like the Sun range from about 5,500 to 6,000 degrees Celsius (9,932 to 10,832 degrees Fahrenheit) for the Sun.
    3) Red Stars (Cooler):
    • Red stars are generally cooler than blue stars.
    • Temperatures can range from about 2,500 to 4,000 degrees Celsius (4,532 to 7,232 degrees Fahrenheit).
    • Examples include many M-type main sequence stars.
    It's important to note that these temperatures are approximate, and the actual temperature of a star can vary based on factors such as its mass and stage of evolution. The temperatures mentioned here represent the effective temperature, which is a measure of the temperature of an idealized sphere that radiates energy at the same rate as the star. The core temperature of a star, where nuclear fusion occurs, is much higher than its surface temperature.

    For More Planetary Facts & Space Animation: Space Balls Videos

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