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Radio waves of 21-cm wavelength originate from which component of the interstellar medium?

doit_the_clown

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Radio waves of 21-cm wavelength originate from which component of the interstellar medium?

Radio waves of 21-cm wavelength originate from which component of the interstellar medium?
A) Cool, neutral atomic hydrogen C) Cool, carbon monoxide, CO
B) Cold, molecular hydrogen, H2 D) Hot, ionized atomic hydrogen

Textbook

Discovering the Universe

Discovering the Universe

Edition: 7^th

Authors: Kaufmann, Comins

Read 98 times

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Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.

Albert Einstein

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doit_the_clown Author

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7 years ago

I appreciate what you did here, answered it right Smiling Face with Open Mouth

Smiling Face with Open Mouth

dianeflunder

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Brilliant ツ

erimis

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Thanks

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