Massive ancient solar storm revealed by tree rings poses modern threat

Ancient tree rings show evidence of the largest known solar storm 14,300 years ago, far bigger than the Carrington Event of 1859.
The storm likely caused bright auroras and energetic particles that spiked radiocarbon levels absorbed by the trees.
Similar events today would severely disrupt satellites, power grids, and pose radiation risks costing trillions in damage.
The frequency and precise causes of such extreme solar storms are still not fully understood.
Experts warn that modern infrastructure remains unprepared for solar superstorms that could cause catastrophic global impacts.