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Impact Sites

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science2 years ago

Scientists Warn of Increased Frequency of Large Asteroids Striking Earth.

Earth may be hit by large asteroids more frequently than previously believed, according to a new study based on satellite imagery of ancient impact sites. Scientists used hyper-detailed images collected by Earth observation satellites to create 3D maps of four crater sites that were formed in the past million years. The algorithm regularly detected the presence of rim-like structures kilometers beyond the accepted rims of four of the craters, suggesting that the collisions that created them were far more energetic than previously believed. However, some scientists doubt that the newly identified structures are real crater rims, instead suggesting that they may have been formed from debris that was thrown out by the violence of the impacts.