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<\/p>\nScientists have detected what they believe to be lightning on Mars by analysing the swirling winds picked up by a NASA robotic spacecraft.<\/p>\n
A microphone aboard the Perseverance rover captured the crackling of electrical discharges, a French-led research team reported on Wednesday.<\/p>\n
The researchers documented 55 instances of what they describe as “mini lightning” over two Martian years – just under four Earth years – mostly occurring during dust storms.<\/p>\n
The electrical arcs, just a few inches in size, took place within about 6ft of the microphone mounted on the rover’s tall mast, which is part of a system for examining Martian rocks with a camera and lasers.<\/p>\n
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\n Pic: NASA\/JPL-Caltech<\/p>\n
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Image:
\n Pic: NASA\/JPL-Caltech<\/p>\n
Scientists say sparks from the electrical bursts – similar to static electricity on Earth – can be heard clearly through the wind gusts and dust particles hitting the microphone.<\/p>\n
The study’s lead author, Baptiste Chide, of the Institute for Research in Astrophysics and Planetology in Toulouse, said scientists have been looking for electrical activity and lightning on Mars for half a century.<\/p>\n
“It opens a completely new field of investigation for Mars science,” Mr Chide said. “It’s like finding a missing piece of the puzzle.”<\/p>\n
However, another scientist has pointed out that the evidence is strong, but it comes from a single instrument intended to study rock composition, and that the electrical discharges were heard – not seen.<\/p>\n
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\n Pic: NASA\/JPL-Caltech<\/p>\n
Read more from Sky News: “It really is a chance discovery to hear something else going on nearby, and everything points to this being Martian lightning,” said Daniel Mitchard, Senior Lecturer in Lightning Physics and Engineering at Cardiff University.<\/p>\n But until new instruments are sent to verify the findings, “I think there will still be a debate from some scientists as to whether this really was lightning”.<\/p>\n Lightning has already been confirmed on Jupiter and Saturn, and researchers have suspected for years that Mars might have it, too.<\/p>\n Mr Chide and his team analysed 28 hours of Perseverance recordings, documenting episodes of “mini lightning” based on acoustic and electric signals to verify possible lightning.<\/p>\n
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