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Today’s Meteorite in Russia Compared to the Tunguska Event
read more at Anne’s Astronomy News http://annesastronomynews.com/
The stunning burning-up of a meteor over Russia today, that unleashed a shockwave injuring hundreds of people, appears to be the country’s most dramatic cosmic experience since the historic Tunguska Event of June 1908.
A hole in Chebarkul Lake made by meteorite debris. Photo by Chebarkul town head Andrey Orlov.
Meteorite explosions in the skies of Russia’s Urals region has sparked panic in three major cities. Witnesses said that houses shuddered, windows were blown out and cellphones stopped working. Video Credit: Russia Today
The Tunguska Event was an explosion that went off in a remote region in Siberia on June 30, 1908, near the river Podkamennaya Tunguska in the north of current Krasnoyarsk region.
Most scientists believe it was caused by a massive meteorite, an asteroid or even a comet although the failure to find fragments from the impact created a mystery that has spawned sometimes endless theories.
The few people closest to the supposed impact area of the Tunguska meteorite were the indigenous Evenki hunters.
Assuming the crater was caused by an impact from space, the body estimated as being of up 70 meters in diameter caused a seismic wave and lit the sky above Siberia for several days.
Around the Tunguska meteorite the forest trees felled fan-like from the center, while the trees in the center remained standing… but without branches. Much of the forest was burned.
The sound of its impact was heard about a thousand kilometers away and the overall effect knocked people and livestock off their feet.
However, some theories suggest that there was in fact no rock, because no fragments of it were ever found. One of such theories looks at the possible escape of methane gas from the ground.
The incident remains a source of multiple wilder hypotheses, ranging from an encounter with a black hole, a landing of a UFO or experiments by the celebrated physicist and inventor Nikola Tesla thousands of kilometers away in New York.
The event still tickles the imagination of Russians and is a tourist attraction for those bold enough to make it to the Podkamennaya Tunguska area.
The Meteor Crater in Arizona is 1.2 kilometers (4,000 feet) wide and almost 185 meters (600 feet) deep.
Black and white early photos taken around the supposed impact area show fallen taiga, which the first explorers measured to spread out from the epicenter for up to 30 kilometers.
The remoteness of the swampy Tunguska area, and the fact that Russia was enveloped in several wars and the Bolshevik Revolution in the early 20th century, meant that only a limited number of people managed to travel there.
The first scientist who ventured to look for the meteorite was mineralogist Leonid Kulik, who made several expeditions, starting in 1927, scavenging for metal remains over hundreds of kilometres in extreme conditions precipitated by lack of money and constant illnesses in the team.
Despite digging and draining scores of apparent craters, nothing resembling a meteorite was recovered.
Source: Maria Antonova, AFP via Phys.Org
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2013-02-15 11:16:58
Source: http://annesastronomynews.com/todays-meteorite-in-russia-compared-to-the-tunguska-event/
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