Canada's Vast 'Sudbury Basin' Was Created By Comet, Study Says

November 18, 2014 2:38 PM

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Since the 1960s, scientists have believed that the Sudbury Basin, a vast crater in Northern Ontario, was created by the impact of some very large object. But it wasn't clear whether the object was a rocky asteroid or an icy comet--until now.

According to a new study by researchers in Canada and Ireland, it was a comet.

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