
Researchers have identified the biggest ever solar storm – when the sun emits huge bursts of energy – using ancient tree rings.
The event happened 14,300 years ago, according to the analysis of ancient tree rings found in the French Alps.

Researchers have identified the biggest ever solar storm – when the sun emits huge bursts of energy – using ancient tree rings.
The event happened 14,300 years ago, according to the analysis of ancient tree rings found in the French Alps.