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Thread: Tunguska, Solved Again

  1. #1
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    Tunguska, Solved Again

    https://astronomy.com/news/2020/10/t..._201016_000000

    An interesting hypothesis. An iron asteroid made a glancing blow and skipped off the Earth's atmosphere and back into a solar orbit. If it had struck Earth, it may have been catostrophic.

  2. #2
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    Quote Originally Posted by Superluminal View Post
    https://astronomy.com/news/2020/10/t..._201016_000000

    An interesting hypothesis. An iron asteroid made a glancing blow and skipped off the Earth's atmosphere and back into a solar orbit. If it had struck Earth, it may have been catostrophic.
    Not reading the paper, how do the authors explain the force that knocked over the trees? Sounds pretty weak explanation to me.

  3. #3
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    Khrennikov and colleagues say a different scenario fits the facts. They say the explosion must have been caused by an iron meteorite about the size of a football stadium. This must have passed through the upper atmosphere, heated rapidly, and then passed out into the Solar System again. The shock wave from this trajectory was what flattened trees.

    The shock wave would have caused an explosion of about the right magnitude, and any vaporized iron would have condensed into dust that would be indistinguishable on the ground. Crucially, this scenario would not have left any visible asteroid remnants

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