Scientists reported new evidence that small electrical discharges may occur on Mars after analyzing wind recordings from NASA’s Perseverance rover. The phenomenon, described as “mini lightning,” was identified through crackling sounds captured by a rover microphone during dust storms and dust devils. A French-led research team documented 55 events over two Martian years and stated that most incidents happened on the windiest days near the rover’s tall mast. The findings suggested a notable pattern of electrical activity that had long been suspected on the planet. Experts said the discovery matters because Mars’ thin, carbon dioxide–rich atmosphere and constant dust movement create conditions that could encourage this type of electrical buildup. The study provided new background for understanding why electrical activity may appear on the Red Planet and why scientists have searched for it for many years.

Further analysis explained how the discharges formed and why they required careful confirmation. Acoustic and electric measurements indicated that dust devils produced quick bursts lasting a few seconds, while larger storms created discharges lasting up to 30 minutes. Because the atmosphere absorbs sound, the signals were weak and needed meticulous examination. An independent researcher commented that the evidence was promising, although full verification required tools designed to observe lightning directly. Scientists said the discovery may affect future missions because repeated static-like discharges could disturb sensitive equipment. Perseverance has also provided other valuable audio data, helping to broaden understanding of Martian surface conditions. NASA is currently studying feasible methods for safely returning the rover’s rock samples to Earth while evaluating cost-efficient alternatives for the mission.