Scientists have discovered the most distant hydroxyl megamaser ever detected. This is a natural space laser.
Articles on radio frequency
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Tracking small, uncrewed aircraft – also known as drones – is difficult, especially at night. Detecting the radio signals used to control them is a promising approach, though it’s no silver bullet.
Airplanes use radio waves to determine how far off the ground they are. New 5G cellphone services come close to the same frequencies the airplanes use. Here’s how that can be a problem.
Top contributors
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Professor of Information Sciences and Technology, Penn State
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Director of the Center for National Security Initiatives and Professor of Aerospace Engineering Sciences, University of Colorado Boulder
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Director: Wits Centre for Astrophysics; SKA Chair in Radio Astronomy, University of Cape Town; Inter-University Institute for Data Intensive Astronomy
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South African Radio Astronomy Observatory (SARAO) post-doctoral researcher, University of Pretoria