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spectroscopy
The study of the nature of objects by analyzing the light and other radiation they produce. It involves the use of a spectroscope or spectrograph to reveal the spectral lines present in the radiation from a particular source. The advent of spectroscopy, in the 1860s, marked the birth of astrophysics as an observational science.
Related categories
• SPECTRA AND SPECTROSCOPY
• OBSERVATIONAL ASTRONOMY
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