Definitions for radio astronomy

This page provides all possible meanings and translations of the word radio astronomy

Random House Webster's College Dictionary

ra′dio astron`omy(n.)

  1. the branch of astronomy that utilizes extraterrestrial radiation in radio wavelengths rather than visible light for the study of the universe.

    Category: Astronomy

Origin of radio astronomy:


Princeton's WordNet

  1. radio astronomy(noun)

    the branch of astronomy that detects and studies the radio waves emitted by celestial bodies


  1. radio astronomy(Noun)

    The branch of astronomy which utilizes radio waves through the use of radio telescopes to study celestial bodies and occurrences.


  1. Radio astronomy

    Radio astronomy is a subfield of astronomy that studies celestial objects at radio frequencies. The initial detection of radio waves from an astronomical object was made in the 1930s, when Karl Jansky observed radiation coming from the Milky Way. Subsequent observations have identified a number of different sources of radio emission. These include stars and galaxies, as well as entirely new classes of objects, such as radio galaxies, quasars, pulsars, and masers. The discovery of the cosmic microwave background radiation, which provided compelling evidence for the Big Bang, was made through radio astronomy. Radio astronomy is conducted using large radio antennas referred to as radio telescopes, that are either used singularly, or with multiple linked telescopes utilizing the techniques of radio interferometry and aperture synthesis. The use of interferometry allows radio astronomy to achieve high angular resolution, as the resolving power of an interferometer is set by the distance between its components, rather than the size of its components.


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