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Sandia National Laboratories On Tunguska

From: UFO UpDates - Toronto <ufoupdates.nul>
Date: Wed, 19 Dec 2007 08:23:21 -0500
Archived: Wed, 19 Dec 2007 08:23:21 -0500
Subject: Sandia National Laboratories On Tunguska



Source: Popular Mechanics - New York, USA

http://www.popularmechanics.com/blogs/science_news/4237449.html

December 18, 2007


Real-Life 3D X-Files Reveal Asteroid Leveled Siberian Region
by
Erik Sofge

It's no Roswell, but dedicated Ufologists have spent decades
debating the true nature of the Tunguska event, a June 30, 1908,
explosion that cleared an 800-sq.-mi. swath of Siberian forest.
After all, there are discrepancies: Though many scientists
believe the destruction came from an asteroid detonating in the
atmosphere, extraterrestrial fragments have yet to be recovered.
A team of Italian scientists believes that a hunk of asteroid
may be in a nearby lake, buried deep within a submerged impact
crater. But until further investigation can be conducted, this
event remains a hot topic for the X-Files set. Was it a UFO
crash? An alien weapons test?

Now, Sandia National Laboratories has released its own
explanation for the event. Using supercomputers to create a 3D
simulation of the explosion, the Department of Energy-funded
nuke lab determined that Tunguska was, indeed, the result of a
relatively small asteroid. When the object detonated in midair,
Sandiaís report says, the force of the blast appears to have
been contained by the Earth's atmosphere, funneling downward as
a column of superheated gas. In fact, the atmosphere might have
been the trigger for the explosion, as increasing resistance
compressed the asteroid until it detonated.

If this analysis is accurate - and itís hard to argue with
Sandia's ability to model earth-shattering explosions - it might
explain the lack of asteroid fragments, since the object could
have been smaller than previously suspected. It would also mean
the total destructive force was somewhere between three and five
megatons, as opposed to the 10 to 20 megatons originally
theorized. None of this is good news.

Although Sandia's report, which was presented at the American
Geophysical Union meeting in San Francisco last week, doesn't
specify the likely size of the Tunguska asteroid, it
demonstrates the threat of relatively small cosmic objects. And
hard as it is to spot the massive rocks hurtling in Earth's
general direction, such as the 1150-ft. asteroid Apophis, which
Popular Mechanics reported on last year, smaller asteroids are
more numerous, and even more difficult to track.

Of course, imaginative Tunguska enthusiasts might interpret
Sandia's results in a more sinister light, since a precise jet
of compressed flame is an excellent description of an alien-
built weapon. For a more reasonable dose of the apocalyptic,
check out simulation videos here:

http://www.sandia.gov/news/resources/releases/2007/asteroid.html



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