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单词 radar astronomy
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radar astronomy
radar astronomy n. a branch of astronomy in which radar is used to observe nearby astronomical objects.
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1950 Evening Capital (Annapolis, Md.) 19 Aug. 4/3 A pioneer in the new field of radar astronomy.
1987 B. Lovell in P. Moore Astron. Encycl. 344/1 Although paraboloidal or other forms of radio telescope are used, radar astronomy is distinguished from radio astronomy, which involves only the reception of radio waves having a natural origin in the universe.
2003 Science 17 Oct. 403/1 In Star Wars, a gas giant's jungle moon..drifts inexorably into the powerful beam of the Death Star. This scene closely mirrors a recent development in radar astronomy.
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