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BookmarkA radio telescope is a form of radio receiver used in astronomy.
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In contrast to an "ordinary" telescope, which receives visible light, a radio telescope "sees" radio waves emitted by radio sources, typically by means of a large parabolic ("dish") antenna, or arrays of them.
Many celestial objects, such as pulsars or active galaxies (like quasars), produce radio-frequency radiation and so are best "visible" or even only visible in the radio region of electromagnetic spectrum.
By examining the frequency, power and timing of radio emissions from these objects, astronomers can improve our understanding of the Universe.
Radio telescopes are also the primary means to track space probes, and are used in the SETI project..
For more information about the topic Radio telescope, read the full article at Wikipedia.org, or see the following related articles:
Green Bank Telescope — The Robert C. Byrd Green Bank Telescope (GBT) is the world's largest fully mobile radio telescope. It is part of the National Radio Astronomy ... > read more
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