SwRI-led team's research shows giant asteroids battered early Earth
San Antonio TX (SPX) Aug 05, 2014 - A new terrestrial bombardment model developed by an international group of scientists led by Southwest Research Institute (SwRI) indicates that Earth's surface was heavily reprocessed - or melted, mixed and buried - as a result of giant asteroid impacts more than four billion years ago. The model, calibrated using existing lunar and terrestrial data, sheds light on the role asteroid collis ... more

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