Ancient tree rings reveal evidence of massive solar storm from 664 BCE

Researchers from the University of Arizona have discovered evidence of a massive solar storm that occurred around 664-663 BCE by analyzing ancient tree rings. This event, known as a Miyake Event, is one of only six identified in the last 14,500 years. The team examined tree rings and compared them with ice core data to identify spikes in radioactive carbon and beryllium isotopes. These spikes indicate intense solar activity, providing insights into past space weather events. Miyake Events are rare and can have significant effects on technology. The researchers noted that if such a storm occurred today, it could severely disrupt communication systems.