Loading ...
Sorry, an error occurred while loading the content.

Fwd = Tunguska blast caused by low density asteroid, say scientists

Expand Messages
  • Frits Westra
    Forwarded by: fwestra@hetnet.nl (Frits Westra) URL: http://www.ananova.com/news/story/sm_437851.html?menu= Original Date: Wed, 31 Oct 2001
    Message 1 of 2 , Oct 31, 2001
    • 0 Attachment
      Forwarded by: fwestra@... (Frits Westra)
      URL: http://www.ananova.com/news/story/sm_437851.html?menu=
      Original Date: Wed, 31 Oct 2001 10:06:06 -0800

      ========================== Forwarded message begins ======================


      Ananova

      Tunguska blast caused by low density asteroid, say scientists

      Italian scientists may have finally discovered what caused the
      mysterious Tunguska blast of 1908.

      The explosion was the equivalent of around 10 million tonnes of TNT
      and levelled entire Siberian forests.

      New research suggests a weak asteroid exploded high in the atmosphere,
      which is why it left no crater.

      The new research has used never-before-seen witness accounts and
      seismic records to work out its direction, speed and therefore its
      orbit.

      More than 80% of the objects in the region of the sky it came from are
      asteroids, which means it too was probably an asteroid.

      One of the joint university team's leaders told the [55]BBC it would
      have broken up if it was a low-density asteroid like Mathilde, which
      was seen by the Near-Shoemaker probe in 1997.

      Dr Luigi Foschini said: "Mathilde is a rubble pile with a density very
      close to that of water. This would mean it could explode and fragment
      in the atmosphere with only the shock wave reaching the ground."

      The work will be published in the journal Astronomy and Astrophysics.

      Story filed: 13:03 Wednesday 31st October 2001

      Copyright � 2001 Ananova Ltd

      ========================== Forwarded message ends ========================
    • tolimak@nettaxi.com
      ... In fact, the situation with the problem of the Tunguska explosion is much more complicated and far from been solved. Those who wish to become acquainted
      Message 2 of 2 , Nov 1, 2001
      • 0 Attachment
        Thursday, 01 Nov 2001 00:27:16, you wrote:

        > Tunguska blast caused by low density asteroid, say scientists.
        > Italian scientists may have finally discovered what caused the
        > mysterious Tunguska blast of 1908. The explosion was the equivalent
        > of around 10 million tonnes of TNT and levelled entire Siberian
        > forests. New research suggests a weak asteroid exploded high in the
        > atmosphere, which is why it left no crater.

        In fact, the situation with the problem of the Tunguska explosion is
        much more complicated and far from been solved. Those who wish to
        become acquainted with a many-sided picture of this problem are
        invited to visit the website of Research Institute on Anomalous
        Phenomena: http://www.geocities.com/riap777/toc.html We have published
        many works of Russian specialists in this field that convincingly
        prove one simple thesis: the Tunguska object was *not* a natural minor
        body from the Solar System, it was highly unusual.

        Thank you for you your attention!

        Sincerely, Vladimir Rubtsov, Ph.D., Director, Research Institute on
        Anomalous Phenomena, Kharkov, Ukraine
      Your message has been successfully submitted and would be delivered to recipients shortly.