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arrives, so any changes in the ionosphere can be seen five to ten days before an earthquake.

As a comet approaches, a plasma discharge takes place between it and the Earth and the comet is fragmented and explodes by internal electrical stress. All the fragments may be melted or vaporized during the plasma discharge, which is most likely why no impact crater was found in the Tunguska event. Interestingly the Tunguska event almost exactly coincides with the muzzle of a Triassic volcano. Volcanoes are the focus of electric discharge activity and this might explain the blast on Tunguska was electrical.

Since most of all the comet fragments are melted and vaporized in the plasma discharge, we can't expect to find any evidence that a meteor , asteroid or comet has impacted the Earth. Ground Zero is the focus of the plasm discharge between Earth and the object, and not the site of any impact, so we won't find any comet fragments there.

Witnesses of the Tunguska event saw fire in the sky, and today we know why. The plasma discharge between the object and the Earth would have strange effects in the atmosphere and at ground level, fires started by radiation from the fireball, and electrically ignited fires would have been started instantly over a wide area.

The peasants reports of lightning and thunder within the firestorm can be described by comparing this effect to the unusual lightning of St. Elmo's fire. Ball lightning would have been generated at the Earth's surface and lightning would have struck from a clear, blue sky, but there were also accounts of hot blasts with shock waves far away from the explosion which can be explained. When the discharges touch down, there will be an immediate heating of the air and a blast. The touchdown points can be far away from the explosion center, and the final result of the explosive fragmentation is melting and vaporization of the object which will spray a haze of glassy spherule, which creates the effect of lightning.

More than 100 years after the event, scientists are still debating whether the exploding object was a comet or an asteroid. Those who believe it was a comet noted the presence of cometary material in the ground over a wide area. On the other hand, those who believe it was an asteroid or meteor argue that a fragile comet would be destroyed too high in the atmosphere to have made such an impact, which is a common argument. Others say it's contemporary mythology that makes us believe that comets are fragile, "ice dirt

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