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Scientist for the last hundred years have been searching for a crator or remnants of space rock.Finally in 2008 scientist think they have found an impact site at the bottom of a nearby lake Cheko.ASTEROIDS: Scientists have discovered a very large asteroid impact site in Antarctica.As little as 200 years ago mainstream English speaking scientist did not believe that stones fell from the sky contrary to all the anecdotal evidence over the past centuries."The number of discovered Near-Earth Asteroids now tops 15,000, with and average of 30 new discoveries added each week" according to NASA's webpage NASA web page As recently as February 15, 2013 a meteorite hit in Chelyabinsk Russia. The impact was calculated as the equivalent of a blast of 300,000 tons of TNT.
The sediments cover an area 2 times the size of Manhattan and are over 600 feet tall.In northern Arizona is a large Meteor Crater, the Barringer Crater, Its well preserved shape suggests a very recent origin.During the last 100 years numerous attempts have been made to determine when this event happened.For an exhaustive treatment of the subject see Meteor Crater An Asteroid that hits earth can cause earth shattering catastrophic damage.The Chicxulub asteroid that hit in the Yucatan of Mexico was the equivalent of 100 trillion tons of TNT.Somewhere in the Indian ocean is thought to be where the giant asteroid struck that produced this giant wave.More shocking is the fact that the microfossils in this sediment were dated to less than 7,000 years ago.This strata contains hundreds of asteroids which have been identified thus far.Now that we know the strata they struck is tens of thousands of years old and not millions of years old, we can see that asteroids arrive at a rate around 2000 times higher than previously projected.Asteroids are usually referred to as being a solid rock from outer space whereas comets are usually a mixture of ice and rock and typically burn up before hitting the earth.In 1907 a large something from outer space destroyed thousands of acres of forest in Tunguska.