Radio Astronomy

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Radio Astronomy

1. The study of celestial objects through observation of radiofrequency waves emitted or reflected by these objects. </dd>
In this sense radio astronomy includes both the use of radiation emitted by the celestial bodies and of radiation originating on earth and reflected by celestial bodies (radar astronomy). </dd>
2. Specifically, the study of celestial objects by measurement of the radiation emitted by them in the radiofrequency range of the electromagnetic spectrum. </dd>
Radio astronomy measurements are usually of the intensity of the received signal but often include polarization of the signal and angular size of the source. [[/a>|/a> ]]


This article is based on NASA's Dictionary of Technical Terms for Aerospace Use