radio astronomy

branch of astronomy that deals with the study of heavenly bodies by means of radio waves

Radio astronomy is a subfield of astronomy that studies celestial objects in the radio frequency portion of the electromagnetic spectrum. Radio astronomy techniques are similar to optical techniques but radio telescopes have to be much larger due to the longer wavelengths being observed. The field originated from the discovery that most astronomical objects emit radiation in the radio wavelengths as well as optical ones.
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Noun
1. the branch of astronomy that detects and studies the radio waves emitted by celestial bodies
(hypernym) astronomy, uranology

n. สาขาหนึ่งทางดาราศาสตร์ที่ศึกษาคลื่นวิทยุที่ได้รับจากอวกาศ

Eng: radio astronomy
Urdu: ریڈیائی فلکیات ۔ فلکیات کی ایک شاخ