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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?

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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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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User Akila Arasan
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7.9k points

1 Answer

1 vote

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