Radio astronomy involves wavelengths much longer than those of visible light, and many orbiting observatories have probed the universe for radiation of very short wavelengths. What sortsof objects and physical conditions would you expect to be associated with emission of radiation at very long and very short wavelengths? (Select all that apply.)very long wavelengthscoldcold gascosmic background radiationnuclear reactions++Opulsarssolar coronavery high-energy processesvery short wavelengthscold gascosmic background radiationnuclear reactionspulsarssolar coronavery high-energy processes

Cold gas clouds in galaxies are made up of molecular hydrogen. It emits a weak spectral line in the…

Answered: Radio astronomy involves wavelengths…

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