Spectroscopy
Spectroscopy is the study of the interaction between matter and electromagnetic radiation as a function of wavelength or frequency. In astronomy, it is used to analyze the composition, motion, and physical conditions of celestial objects.
Spectroscopy is discussed in astrophysics, observational astronomy, and physical chemistry.
Status
Spectroscopic methods are widely used in ground-based and space-based observations. Advances in instrumentation and analysis techniques continue to expand their precision and range of application.