More than 150 terrestrial impact craters have now been found, leading many scientists to conclude that terrestrial impacts have been important in shaping Earth and its life through geologic time. The 1980's saw the recognition by many geologists of terrestrial impacts as an important mechanism in the extinction and subsequent evolution of new species. This slide set includes aerial and ground images of some of the better known craters and compares these to craters found on other planets and the Moon.
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