Comet Meets Earth - What Really Happens? (Video) b4in.org/tKb The headline question is the basis for the video explanation below, with answers from David Morrison of the National Aeronautics and Space Administration’s Ames Research Center, and Gerrit L. Verschuur, an astrophysicist and radio astronomer at Rhodes College in Memphis, Tenn, on what would happen if a large comet collided with Earth. If the comet is 10 kilometers across or larger, the global environmental damage would be so severe it will lead to mass extinction and almost all life forms will die. Morrison: The environmental consequences of a giant impact take many forms; the worst effects come from a global firestorm ignited by backfalling impact debris, and from a global pall of darkness that lasts for many months due to dust suspended in the stratosphere. More with video b4in.org/tKb
Posted on: Sat, 21 Sep 2013 17:10:38 +0000
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