|Spectroscopy means the scattering of an object's light into its element colors (i.e. energies). There are two distinctive classes of spectra: Continuous and discrete. For a continuous spectrum, the light is composed of a wide, continuous range of colors (energies). With discrete spectra, one sees only bright or dark lines at very distinct and sharply-defined colors (energies). Discrete spectra with bright lines are known as emission spectra; those with dark lines are called absorption spectra. Spectroscopy is a powerful tool in astronomy, which helps in fetching information about the temperature, density, composition, and important physical processes of an astronomical object. Chemical Sciences journal is the best Open- Access journals in Spectroscopy. It is a peer-reviewed, open access journal that publishes original research articles as well as review articles in all areas of spectroscopy. The open access journals are peer reviewed scholarly journals of Chemical Sciences Journal. The top open access journals are freely available on the public internet domain, allowing any end users to read, download, copy, distribute, prink, search or link to the full texts of the articles. These provide high quality, meticulously reviewed and rapid publication, to cater the insistent need of scientific community. These journals are indexed with all their citations noted. The top open access journals are indexed in SCOPUS, COPERNICUS, CAS, EBSCO and ISI.