What information can the atomic emission spectra of a distant star yield for scientists

The emission spectrum of various elements is specific, and the hydrogen spectra would be separate from the helium spectrum. The different shades of light emitted by the emission spectra of various elements enable identification of them. One use of this methodology is to classify the elements in distant stars.

The functionality of the Atomic Emission Spectra can be contrasted with the reliability of a fingerprint, the fingerprinting of the atomic emission spectra renders a specific identifier. Utilizing this special marker, we've figured out how hot the stars are, and what kind of components they were created from. Which led scientists to discover the modern astrophysics.