NASA Rover detects electric sparks in Martian dust devils

Three dust devils swirl near Jezero Crater’s rim, captured by Perseverance (Image: NASA/JPL-Caltech/SSI)

NASA’s Perseverance rover has observed electric sparks on Mars. These sparks occurred inside dust devils and small dust storms. The discovery confirms Martian atmosphere can carry substantial electric charges. Scientists captured 55 discharge events, 16 directly over the rover.

The sparks result from dust particles rubbing against each other. This process, called the triboelectric effect, generates electric discharges. Mars’ thin, dry atmosphere allows smaller charges to trigger sparks. Dust devils carry dust and sand that collide during swirling motions.

Perseverance’s SuperCam microphone recorded crackles and acoustic mini-booms. Electromagnetic sensors confirmed the presence of electrical discharges in storms. These tools allow scientists to measure intensity and frequency directly. The rover also captured video evidence of moving dust devils.

Electrical discharges could create oxidising compounds in Martian air and soil. Such reactions may destroy organic molecules, affecting habitability studies. Understanding Martian electrostatics improves climate models and weather predictions. It also helps design safer electronics for future missions.

Robotic and human explorers will need protection from static electricity. The findings guide design of habitats and instruments for Mars. Scientists now plan long-term monitoring of dust-induced electrical activity. Future observations will clarify Martian atmospheric chemistry and dust dynamics.

Researchers will analyse discharge patterns during different seasons on Mars. They hope to understand dust transport and storm electrification better. The team aims to integrate these findings into planetary weather models. Perseverance continues to provide vital data on the Red Planet.