Space watchers are on edge as a mystery unfolds across the cosmos. While the interstellar comet 3I/ATLAS races towards the Sun, another icy traveller, 12P/Pons-Brooks, has astonished astronomers by emitting unusual radio signals.
The discovery has sparked intense speculation about what's happening deep beneath these ancient fragments of the solar system's birth—and what their strange emissions could mean for humanity's understanding of cometary physics.
