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Mystery Moon Swirls Caused By Blasts of Comet Gas?
astroengine writes: Strange bright swirls have long been known to exist on the moon's surface and their origin is steeped in mystery. Often stretching thousands of miles across the lunar landscape, scientists have tried to make connections with the elegant curved shapes with the moon's interior magnetism or interactions between moon dirt and the solar wind, but these explanations have fallen short. Now, inspired by the Apollo moon landings and armed with a powerful computer model, researchers at Brown University think they have an alternative answer for these swirly patterns. Over the past 100 million years, many small comets impacted the moon's pockmarked surface. Along with the icy nuclei that carved craters into the moon rock, the gaseous comet atmospheres — known as a comet's coma — would have also blasted into the moon's uppermost layer of regolith, possibly leaving the swirly imprint. "We think this makes a pretty strong case that the swirls represent remnants of cometary collisions," said planetary geoscientist Peter Schultz, at Brown University.
Earth's orbital vacuum cleaner.
Do not look at laser with remaining good eye.
I'm not impressed. If they think gaseous explosions from a comet impact is a likely cause, then surely, it would not be a swirling pattern? I'd expect to see this at the point of a crater, although no research into collisions has ever produced craters that look like those on the moon / Mars, that I'm aware of. Back to the point though, surely we'd see this patternation from craters and in multiple directs? Even if I'm wrong about the multiple directions, it surely makes sense that we should see a crater in the area? The picture they use in the article doesn't seem to follow the explanation, in my opinion.
problem solved
A comet has a core, a coma and a tail. When the comet hits the Moon, the core may leave a crater. The coma and tail still impact, they are made of physical objects, but they are just gas and dust. The authors are saying the swirl patterns are caused by the impact of this gas and dust. It is not ejected from the crater.