Astronomers have detected a powerful and unusual radio signal coming from deep space, billions of light-years away from Earth. The signal consists of fast, repeating bursts of radio waves that last only milliseconds but release enormous amounts of energy.

Scientists believe the source could be a magnetar — a highly magnetized neutron star — but the exact origin is still unknown. The repeating pattern of the signal makes it especially interesting, since most fast radio bursts happen only once.

Researchers around the world are now coordinating observations using multiple radio telescopes to study the signal in more detail. Each new detection helps narrow down possible explanations and brings scientists closer to understanding one of the universe’s biggest mysteries.