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Story summary
- Researchers at the University of Southampton have identified a radio signal that precedes auroral substorms.
- Auroral beads, a necklace-like sky pattern, often mark the onset of these substorms.
- The study used data from satellites and ground observatories to detect a distinct radio burst when beads appear.
- The signal suggests a fundamental physical process and could apply to magnetospheres of other planets, such as Jupiter and Saturn.
