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Sagot :
Astronomers use the colour of stars to determine how hot they are and their brightness to estimate how far they are.
When astronomers are in space and studying the nature of stars.
The colour of the star change according to the temperature of the star. If the star is more red in colour it is supposed to have more temperature that of a star which has a fade colour.
To estimate the distance of the stars from the astronomers, they use the brightness of the star as a factor to calculate the distance between them.
If the brightness of the star is less it is supposed to be more distant from the astronomers and vice versa.
To know more about stars, visit,
https://brainly.com/question/1059971
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