RICHMOND, Virginia, Sept. 20 -- Virginia Commonwealth University issued the following news:

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VCU's Arif Sikder of the Center for Environmental Studies is part of the research team that is going back in time - by hundreds of millions of years.

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By Sian Wilkerson

A probable crater stretching more than 370 miles, or 600 kilometers, across the heart of Australia could reshape our understanding of Earth's geological history.

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