Scientists in Australia have discovered what they say is the largest asteroid impact area ever found. Excerpt from bbc.comThe 400-kilometre (250-mile) wide area is buried deep in the earth's crust and consists of two separate impact scars.The...
|Mount Vesuvius today|
|Researchers Daniel Delattre, left, and Emmanuel Brun observe the scroll before X-ray phase contrast imaging begins. (J. Delattre)|
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