How do astronomrtd use light to identify the elements that are present in the sun and other stars?

Question

How do astronomers use light to identify the elements that are present in the sun and other stars?

Answer 1

Spectrometry.

Answer 2

By a p[rocess known as spectroscopy.Light is sent through a spectroscope,the spectral lines indicating different chemicals are identified.

Helium was found in sun before it was detected on earth.

Answer 3

by splitting the light into a spectrum & calculate it's ratio to determine what these represents in terms of chemical/mineral transmission.

Answer 4

By passing the light through a prism (or diffraction grating) to split it into the different colors that all light is made of. Each element has a different set of colors associated with it.