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The colour of a star depends on its temperature.

Massive main sequence stars can have surface temperatures of 50,000 K. Smaller stars such as the Sun have surface temperatures of a few thousand K. Red giants have relatively low surface temperatures of about 3,600 K, but are still very bright.

'K' or 'Kelvin' is a temperature measurement, with 0 Kelvin equal to absolute zero equal to -273oC.

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How do stars get their colors?

The Color of stars depends upon their surface temperature.


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What is the temperature of the medium star?

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