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Perseverance rover detects possible lightning in Martian atmosphere
Scientists report the first recorded evidence of electrical activity in Mars' atmosphere, captured by NASA's Perseverance rover, suggesting the planet may experience lightning-like discharges tied to dust storms and whirlwinds.
Unprecedented atmospheric recordings
A team of French researchers analyzed 28 hours of audio and electromagnetic data collected over two Martian years (1,374 Earth days) by the rover's SuperCam instrument. The findings, published this week, reveal electrical discharges-dubbed "mini lightning"-associated with dust devils and storm fronts. Dust devils, small whirlwinds formed by rising hot air, appear to generate these discharges through internal friction.
Lead author Dr. Baptiste Chide of the Institute for Research in Astrophysics and Planetology called the discovery "major," noting implications for Mars' atmospheric chemistry, climate, and future exploration. If confirmed, Mars would join Earth, Saturn, and Jupiter as planets with documented atmospheric electrical activity.
Scientific debate and next steps
While the recordings provide "persuasive evidence" of dust-induced discharges, skepticism remains due to the lack of visual confirmation, particle physicist Dr. Daniel Pritchard wrote in Nature. "Some doubt will inevitably remain as to whether this really was Martian lightning," he cautioned, predicting prolonged debate given the field's contentious history.
Researchers propose deploying more sensitive cameras and specialized instruments to Mars to verify the findings. Such tools could help distinguish between electrical phenomena and other atmospheric disturbances.
Broader mission context: Searching for ancient life
The discovery coincides with Perseverance's ongoing exploration of Jezero Crater, a site chosen for its potential to harbor signs of past life. In September 2025, scientists identified rocks with unusual mineral markings-nicknamed "leopard spots" and "poppy seeds"-that could stem from ancient microbial activity or geological processes. Billions of years ago, Mars had a thicker atmosphere and liquid water, conditions that may have supported life.
"These discharges represent a major discovery, with direct implications for Martian atmospheric chemistry, climate, habitability, and the future of robotic and human exploration."
Dr. Baptiste Chide, Institute for Research in Astrophysics and Planetology
Why Jezero Crater?
Perseverance's landing site was selected for its geological features suggesting a former delta, where liquid water once flowed. Such environments are prime targets in the search for biosignatures-chemical or structural traces of past life. The rover's findings, including the potential electrical activity, add layers to scientists' understanding of Mars' dynamic history.
