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Blue stars are hotter than the sun,

white ones about the same,

and red ones are cooler.

If you use a spectroscope the calculations are much more precise.

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13y ago

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Do star color indicates the absolute distance?

No, the color of a star does not directly indicate its absolute distance. Star color is related to its surface temperature, and stars of different temperatures can be located at varying distances from Earth. The brightness of a star, as measured by its apparent magnitude, is more indicative of its distance.


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The surface temperature can be estimated quite precisely from the color of the light. The temperature of the core can't be measured as directly, and must be estimated based on our knowledge of how stars work.


How is a star's temperature measured?

A star's temperature is measured by how white-hot its light is, not in Fahrenheit degrees, but in Celsius degrees. Our Sun is white hot, alright, but is a bit toward the yellow side of average. Larger (and hotter) stars may be more on the blue side of average.


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A star's luminosity is measured according to the relevance to the sun. Basically for example, if a star is 8,300 degrees Celsius and has a luminosity of 0.001; the luminosity is compared to the sun.


What color of a star indicate about it?

The color of the star Indicates its Temperature.


What indicates a stars temperature and brightness?

A star's temperature is indicated by its color, with hotter stars appearing blue and cooler stars appearing red. Brightness is measured using the star's apparent magnitude, with higher magnitudes representing dimmer stars and lower magnitudes representing brighter stars.


How is the azimuth of a star measured?

The azimuth of a star is measured as the horizontal angle from a reference point, typically measured in degrees clockwise from north. It is often determined using a compass or an azimuth circle in astronomy.


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What color star is regulus?

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