Glossary term: submillimeter astronomy

Description: Submillimeter astronomy is the study of the sky in far infrared light with wavelengths between one hundred microns and one millimeter. Submillimeter astronomy is sensitive to some of the coldest regions of space and can be used to study regions with the heaviest extinction. It is particularly useful for studing star forming regions and planet-forming disks around young stars. Heavily redshifted light from the most distant galaxies can also be detected in the submillimeter. Many of the astronomical techniques for submillimeter astronomy are shared with radio astronomy and many submillimeter observatories use arrays of telescopes. However there are single dish observatories too. Submillimeter observatories are typically located in very dry places to reduce atmospheric absorption from water vapour. There have also been submillimeter balloon experiments.

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