What do austronamers study to learn about the properties of stars?

Answer 1

Astronomers study spectra to learn about the properties of starts. Spectra (plural of spectrum) is defined as an array of entities, as light waves or particles, ordered in accordance with the magnitudes of a common physical property, as wavelength or mass, and the band or series of colors, together with invisible extensions, produced by dispersion of radiant energy, as by a prism.

Answer 2

Astronomers study the light emitted by stars to learn about their properties. By analyzing the different wavelengths and intensities of light, astronomers can determine a star's temperature, composition, size, and age. This information helps astronomers to classify and understand stars better.