Visible electromagnetic radiation emanating from celestial bodies offers significant information about their composition, temperature, and atmospheric conditions. Variations in the spectral distribution of this radiation result in differing visual appearances. For instance, a high concentration of iron oxide on a planetary surface typically results in a reddish appearance.
Analyzing spectral characteristics provides crucial insights into the processes shaping planetary environments and their evolutionary history. Historically, telescopic observation has been the primary method of discerning these characteristics. Modern spectroscopic techniques now allow for a more detailed and quantitative assessment of planetary surfaces and atmospheres, aiding in identifying specific elements and compounds.
