solved : textQuestion 2 How is 21cm wavelength light useful to astro

  

textQuestion 2 How is 21cm wavelength light useful to astronomers? A. It lets astronomers “see”through molecular hydrogen gas in Way?s black holes. B. It is used to study distant stars in the Ealaxy?s haloand these signals penetrate the dust in the Galaxy’s disk. C. It lets astronomers learn about the pr… Show more… Show moreScience AstronomyThis question was created fromastr100 week 6 quiz.txt

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