What do astronomers analyze to determine the composition and surface temperature of a star

asked Aug 3, 2018 42.8k views

3 votes

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4 votes

This is more of a science question
You would get more answers there

Damien Ryan answered Aug 5, 2018

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5 votes

They look at the light from the star using a spectrometer. The composition of the light tells them what elements are present in that star

Santacrab answered Aug 6, 2018

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