For over 100 years, scientists have been hell-bent on talking to aliens, and new technology could give that hunt a boost.

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.

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

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

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

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

The number of satellites is increasing rapidly, which is becoming a problem for astronomy. An unexpected TV signal in ...