Final answer:
Spectroscopic measurements use spectroscopy to analyze the absorption, emission, or scattering of electromagnetic radiation by atoms or molecules in order to study physical processes or the properties of the atoms or molecules themselves.
Step-by-step explanation:
Spectroscopic measurements are used to observe and analyze the electromagnetic radiation absorbed, emitted, or scattered by atoms or molecules to study physical processes or study the atoms or molecules themselves. Spectroscopy allows scientists to determine the composition, temperature, motion, and other characteristics of celestial objects, making it one of the cornerstones of astronomical research. By measuring the absorption, emission, or scattering of electromagnetic radiation, spectroscopy provides valuable information about the energy levels of atoms or molecules and the interactions between radiation and matter.