Since 2021, aggregated from related topics
Astronomical spectroscopy is a branch of astronomy that focuses on analyzing the light emitted or absorbed by celestial objects, such as stars, planets, galaxies, and nebulae. Spectroscopy is used to study the chemical composition, temperature, density, and motion of these objects by analyzing the different wavelengths of light they produce. By studying these spectra, astronomers can learn valuable information about the physical properties and evolution of astronomical objects. Spectroscopy has been instrumental in discovering new elements, identifying the presence of certain compounds, and analyzing the movement of celestial objects through Doppler shifts.