Tunguska Explosion

Topics: Scientific method, Comet, Impact event Pages: 1 (382 words) Published: February 23, 2013
Tunguska explosion, was a powerful explosion that occurred in in an isolated area of Siberia in June 30, 1908. Trees were flattened in a radial pattern over an area of 850 square miles. Seismic vibrations were recorded by instruments as far away as 600 miles. Fires burned for weeks. Many scientists went to Tunguska to find the cause. There were 100 theories about what caused the explosion. Among them, the widely accepted is comet theory.

The main difference between asteroids and comets is what they are made of. Asteroids are made up of metals and rocky material, while comets are made up of ice, dust and rocky material. First, the explosion might be consistent with a comet, which generally is a loose mixture of stone and ice. Upon explosion, very little debris would remain as evidence. Second, the comet hypothesis was further supported by the glowing skies or bright nights observed across Europe for several evenings after the impact. Third, some people questioned that if this was caused by comet, what could explain the radiation to the area, the plants and human? According to the scientist, large magnitude explosion could result radiation. The research, accepted for publication (June 24, 2009) by the journal Geophysical Research Letters, published by the American Geophysical Union, connects the two events by what followed each about a day later: brilliant, night-visible clouds, or noctilucent clouds, that are made up of ice particles and only form at very high altitudes and in extremely cold temperatures. Space Shuttle Science Shows How 1908 Tunguska Explosion Was Caused By A Comet. was almost certainly caused by a comet entering the Earth's atmosphere, says new Cornell University research. The conclusion is supported by an unlikely source: the exhaust plume from the NASA space shuttle launched a centu

Our team supports comet theory because we evaluate other theories. But they don’t have bases. 1)UFO theory. If was done by UFO, it could not impact 600...
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