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The branch of astronomy that uses observations of emissions in the radio part of the electromagnetic spectrum to study extraterrestrial sources such as stars, planets, galaxies, interstellar gas, and dust clouds.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Astronomy) a branch of astronomy in which a radio telescope is used to detect and analyse radio signals received on earth from radio sources in space
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
the branch of astronomy that utilizes extraterrestrial radiation in radio wavelengths rather than visible light for the study of the universe.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
The branch of astronomy dealing with the detection of objects in space by means of the radio waves that these objects emit.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
The collection and analysis of radio waves from space, a technique that began in 1937.
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited
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|Noun||1.||radio astronomy - the branch of astronomy that detects and studies the radio waves emitted by celestial bodies|
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