Physics, 13.11.2019 07:31 Peachfarie93451
Match the major interstellar gas type with the method used for observing that type. neutral hydrogen gas giant molecular clouds ionized hydrogen gas ultra-hot interstellar gas
a. radio and infrared spectral lines.
b. ultra-violet and x-ray emissions.
c. optical emissions, especially the balmer lines.
d. 21-cm wavelength emissions from electron spin-flip.
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Match the major interstellar gas type with the method used for observing that type. neutral hydrogen...
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