Will+we+get+hit+by+a+Comet?

__Background Information __

The space rock is destroyed by heat of impact and a jet of vaporized stone blast a hole in the atmosphere. Explosive force of 100 million tons of TNT
 * Evidence For Impacts with Earth in the Past **

February 18, 1995 many people in Japan saw a meteorite fly across the sky. The next morning a school director found it in his car. June 21, 1994 José Martin and his wife were in there car when they were hit by a 1.4kg stone that had smashed through there windscreen. Later over 50kg of meteorite fragments were found near and impact site.

In Peekskill, New York a meteorite was found in the found in the boot of a Chevy Malibu. It made a 10 cm deep crater in the tarmac. In the first billion years of the Solar system a rain of comets, 100,000 of them could have crashed into our young planet. Their ice could account for much of the water in the oceans. Organic molecules trapped in the ice could have been the ingredients for starting life on its evolutionary journey.



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