Astronomical spectroscopy is the investigation of cosmology utilizing the methods of spectroscopy to quantify the range of electromagnetic radiation, including obvious light and radio, which transmits from stars and other heavenly items. A heavenly range can uncover numerous properties of stars, for example, their concoction sythesis, temperature, thickness, mass, separation, radiance, and relative movement utilizing Doppler move estimations. Spectroscopy is likewise used to contemplate the physical properties of numerous different kinds of divine items, for example, planets, nebulae, universes, and dynamic galactic cores. Spectroscopy is one of the essential devices available to a stargazer, permitting one to decide the compound creations, physical properties, and spiral speeds of galactic sources. Spectroscopy is the methods used to quantify the dull issue substance of worlds, the majority of two stars in circle about one another, the mass of a bunch of systems, the pace of development of the Universe, or find an exoplanet around different stars, all utilizing the Doppler move. It makes it possible for the astronomer to determine the physical conditions in distant stars and nebulae, including the chemical composition and temperatures, by quantitative analysis of the strengths of spectral features, thus constraining models of chemical enrichment in galaxies and the evolution of the universe.