how do spectrographs help astronomers classify stars? they determine the size of stars. they evaluate the…
how do spectrographs help astronomers classify stars? they determine the size of stars. they evaluate the color of stars. they measure the brightness of stars. they analyze the composition of stars.
Answer
Brief Explanations:
Spectrographs break light from stars into spectra. Different elements in stars emit or absorb light at specific wavelengths. By analyzing these spectral lines, astronomers can determine the chemical composition of stars.
Answer:
They analyze the composition of stars.