Tunguska event may have been caused by iron asteroid that went back into space, researchers say
The Tunguska event, a seismic blast that rocked a remote Siberian forest more than a century ago, is believed to have been caused by a meteor that exploded before it hit the ground. A new study sheds more light on the asteroid, noting it may have never actually hit Earth at all.
via FOX NEWS https://ift.tt/2TZtnp2
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