Radio Astronomy
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Radio Astronomy
</dt>
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>
]]
References
This article is based on NASA's Dictionary of Technical Terms for Aerospace Use
