NASA’s Perseverance rover has, for the first time, recorded evidence of lightning on Mars. Its microphone captured tiny “zaps” during the planet’s ongoing dust storms. These sounds indicate small-scale electrical discharges in Mars’ thin, dusty atmosphere.
For years, scientists debated whether Mars’ environment could generate electric activity. A new study published in Nature confirms that the rover unintentionally recorded these micro-lightning events. Unlike Earth’s long, bright lightning strikes, Martian discharges are faint and short.
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Lead researcher Baptiste Chide (CNRS, France) explained the phenomenon. He compared the zaps to the small static shocks felt on dry days when touching a car door. Though weak, the discharges occur constantly across the planet.
These discharges arise when fine dust particles rub against each other, gaining electrons. The resulting energy produces tiny arcs only a few millimeters or centimeters long, creating audible shock waves. Mars’ low air pressure allows these small charges to generate detectable electrical events more easily than on Earth.
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Chide noted that similar electrical activity occurs in Earth’s deserts during dust storms, but it rarely produces visible lightning. The Martian phenomenon was predicted theoretically and recreated in lab experiments, and now Perseverance has confirmed it directly on the planet.