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New Evidence Emerges In Support Of Double Asteroid Impact Theory

Nearly 15% of all asteroids travel in pairs, yet very few impact craters on Earth have been identified as "doublets" — dual craters arising from sudden back-to-back impacts. But a new analysis has identified a potential candidate in Sweden, the product of a binary pair striking the Earth some 458 million years ago. » 3/19/14 9:10am 3/19/14 9:10am

What created such enormous craters on the Moon's nearside?

Earth's moon has been blasted by a lot of space rocks in its 4.5-billion-year history. While these impacts have left a near-uniform distribution of craters across our satellite's surface, planetary scientists have shown that one of its sides – the side that faces Earth – bears significantly larger scars than the… » 11/07/13 12:58pm 11/07/13 12:58pm