How do astronomers use the different spectra of electromagnetic radiation to determine the chemical composition, temperature, density, and motion of celestial objects in space?
Answer 1
Bonnie Dickson
Astronomers analyze electromagnetic spectra emitted or absorbed by celestial objects to determine their chemical composition, temperature, density, and motion. By examining the wavelengths, spectral lines, and shifts in these spectra, they can identify elements, measure temperatures through intensity, estimate densities, and detect motion via Doppler shifts.
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