Hunting for alien civilizations isn't a matter of just waiting around for them to show up; it's the business of combing ...

Radio telescopes detect signals from billions of years ago, but radio-frequency interference presents challenges.

Most of them flare just once, randomly, making them impossible to predict, and very difficult to trace back to a source. Some ...

Astronomers have detected mysterious radio signals from Proxima Centauri, the closest star system to Earth. Could this be the ...

A dead galaxy shouldn't produce bursts of radio light. Yet this 11 billion-year-old one did — throwing scientists for a loop.

A team of astronomers looking at data from the Murchison Widefield Array radio telescope in Western Australia were met with a ...

A powerful solar flare unleashed by the Sun on Sunday caused a radio blackout across parts of the Pacific Ocean, the US ...