SUMMARY: By chasing dust devils across the desert with a specially equipped truck, scientists have discovered that on Earth at least, they can generate a high-voltage electric field. This has implications for future exploration on Mars since much larger dust devils crisscross the surface of the Red Planet. This situation happens because the dust particles in the mini-twister rub together and become charged; the negative particles are carried high into the air while the positive particles stay lower down. Future robotic missions to Mars will hope to measure the strength and danger these electric devils might pose down the road.
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