in at least three sentences explain why scientists use stellar spectra to study the stars

Answer 1

Scientists use stellar spectra to study the stars because it provides essential information about their composition. By analyzing the wavelengths of light emitted or absorbed by a star, scientists can identify the elements present in the star and their relative amounts. This allows them to determine the star's temperature, chemical composition, and other fundamental properties. Furthermore, stellar spectra can provide insights into the motion and physical conditions of stars, helping scientists understand their life cycles and evolution.