Red stars are hotter than blue stars?

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by Vanchi
Last updated 5 years ago


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Red stars are hotter than blue stars?

Red stars are hotter than blue stars?

Absolutely NOT

Bluer lights have higher temperatures, and redder lights have lower temperatures.

The idea “Blue means cold, and red means hot” we hold about colors greatly affects our misconception towards the relationship between colors and temperatures of stars.

Blue stars are hotter than red stars!!!

Star Spica emits bluer lights(shorter wavelengths). Therefore, it has higher temperature.

Star Antares emits redder lights(longer wavelengths). Therefore, it has lower temperature.

This spectrum confirms the statements above and below. Spica has a temperature of 23,000K, and Antares' temperature is 3400K.


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