Radio waves are the wavelengths du jour in observing the Universe. As such, the band from 1400 to 1427 MHz that corresponds to the 21-cm hydrogen line is specially protected for… Click to show full abstract
Radio waves are the wavelengths du jour in observing the Universe. As such, the band from 1400 to 1427 MHz that corresponds to the 21-cm hydrogen line is specially protected for radio observation. ...
               
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