Aussies cite evidence of Late Heavy Bombardment impact

This apocalyptic asteroid's impact was bigger than one that killed dinosaurs

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The asteroid, which is thought to have hit the Earth 3.46 billion years ago, is estimated to have been huge -- 12 to 18 miles (20 to 30 kilometers) wide -- and its impact would have been felt around the globe. Glikson and his team are basing their assessment on the discovery of tiny glass beads called spherules. They materialized from vaporized material caused by the asteroid's impact. The asteroid's possible size was determined by analyzing the size of the spherules, Glikson told CNN. It means the asteroid was bigger than the one that is thought to have wiped out the dinosaurs. It hit Earth 66 million years ago. Glikson says it's impossible to tell where it would have struck, but it would have formed a crater hundreds of kilometers wide.

via International Skeptics Forum http://ift.tt/1Toqmad