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By analyzing about 2.1 million slope streaks photographed by the Mars Reconnaissance Orbiter from 2006 to 2024, almost all new streaks are the result of seasonal wind and dust erosion. And data also shows that less than 0.1% of newly formed streaks are causing meteoroid impacts or even Mars quakes. And the reason we're taking so long to finally figure this out has to do with the conditions. So the conditions have to be right at sunrise or sunset. As the sun rises, Tom, he could discuss the same sort of processes that happen here on Earth. As the sun rises, dry Martian deserts heat the atmosphere rapidly, setting off strong convection. Cold gases in the atmosphere flow downhill as strong winds. And as it goes downward, it warms, compresses. And when it warms, it rises, making way for additional cold air to follow downward. And there are about 1.6 million streaks on the planet's surface with the current rate of formation. 80,000 new ones should be produced per year. So they're now pretty certain that it's not a result of landslides that are involving water, but the fact that the dryness of the soil and wind conditions and heating are the cause for these.