Now, a new study shows this period of heavy bombardment was 10 times greater than previously believed.
An asteroid impact 66 million years ago wiped out much of life on Earth, endingthe Age of Dinosaurs.
Weather wears away on impact craters through erosion, making older impact craters disappear over the ages.
However, impacts also kick up pellets of molten glass, which land back onEarth.
More massive impacts kick pellets further, with the most massive events capable of producing a global debris field.
Quite a spectacle, explains Dr. Simone Marchi of the Southwest Research Institute.
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These events may have played a critical role inshaping our planetas the earliest life was forming.
This article was originally published onThe Cosmic Companionby James Maynard, the founder and publisher of The Cosmic Companion.
you’re free to read the original articlehere.
