Hunting for alien civilizations isn't a matter of just waiting around for them to show up; it's the business of combing through enormous volumes of data to look for peculiar signals.

The sky is awash with radio-frequency interference (RFI), but thanks to ... of 4,096 antennas designed to detect low-frequency radio waves between 70 and 300 MHz that carry information from ...

At the end of President Donald Trump's first term, his administration auctioned off a swath of government radio frequencies ...

The accidental second discovery was made in the 1960s. At the time NASA was running Project Echo. It involved putting large ...

The systematic investigation of the properties and characteristics of these very short waves was taken up in view of the advantages which they seemed to offer in the field of practical radio ...

FM radio works the same way that AM radio works. The difference is in how the carrier wave is modulated, or altered. With AM radio, the amplitude, or overall strength, of the signal is varied to ...