Laboratory microwave spectroscopy of interstellar molecules

Abstract Modern radio astronomy has revealed that various kinds of molecules exist in ther very cold region between stars: interstellar space. An electromagnetic wave with a wavelength of a few centimeters to 1 mm corresponds in energy to a few to ten degrees of Kelvin. A molecule having its spectrum in this energy region provides us with valuable information about the low-energy environment where the molecule exists. New information provided by radio astronomy has rarely been

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