Pop culture is full of references to messages from outer space. Some of them were friendly attempts at communication, such as the five-note musical sequence transmitted to Earth by aliens in Close ...

The Earth is constantly receiving space signals that contain vital information about extremely energetic phenomena. Among the most peculiar are brief pulses of extremely high-energy radio waves, known ...

Associate Professor of Physics Jonathan Pober has spent the past 20 years detecting faint astronomical signals in radio waves that can provide information about the early universe. This task can be ...

A brief but extremely powerful radio signal thought to have coming from deep space has now been traced to a dead NASA satellite in Earth orbit. Relay 2 was one of a pair of experimental communications ...

Astronomers in Australia picked up a strange radio signal in June 2024 — one near our planet and so powerful that, for a moment, it outshined everything else in the sky. The ensuing search for its ...