Thunderstorms churn up a ‘boiling pot’ of gamma rays 

A view from a retrofitted spy plane reveals complex emissions of high-energy light

A plane flies over the tops of thunderclouds that are glowing purple.

A thunderstorm, viewed from an airplane above the clouds, glows in gamma rays (purple in this illustration).

The ALOFT team/Mount Visual (CC BY 4.0)

Above the cloud tops, thunderstorms throb with a complex, frenetic light show of high-energy radiation.