an astronomer wants to observe a cloud of cold neutral (not ionized) hydrogen, far away from any stars. what would be an instrument that could help in this task?

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asked Sep 17, 2023 69.2k views

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an astronomer wants to observe a cloud of cold neutral (not ionized) hydrogen, far away from any stars. what would be an instrument that could help in this task?

Physics
high-school

Akila Arasan asked

by Akila Arasan

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1 Answer

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A radio telescope, tuned to a wavelength of about 21 centimeters.

Vedat answered Sep 23, 2023

by Vedat

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