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Scientists Uncover Cosmic Rays' Role in Lightning Formation

7/31/2025

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Summary

Story summary

Scientists at the University of Pennsylvania have unveiled the secrets of lightning formation. Their groundbreaking research, featured in the Journal of Geophysical Research, reveals that cosmic rays generate high-energy electrons in thunderclouds. These electrons collide with air molecules, producing X-rays and igniting a chain reaction of electron avalanches that culminate in powerful lightning strikes.

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Story summary

Scientists at the University of Pennsylvania have unveiled the secrets of lightning formation. Their groundbreaking research, featured in the Journal of Geophysical Research, reveals that cosmic rays generate high-energy electrons in thunderclouds. These electrons collide with air molecules, producing X-rays and igniting a chain reaction of electron avalanches that culminate in powerful lightning strikes.