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What Killed the Dinosaurs?

22 Mar 2013, 11:13 UTC
What Killed the Dinosaurs?
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In February 2013, the asteroid 2012 DA14 flew past the Earth closer than many of the Earth’s geo-stationary satellites. Although not visible to the naked eye many telescopes were fixed towards the skies in a hope of catching a glimpse of this celestial fly-by. Many other people watched live webcasts of the asteroid as it came just 27 000km away from the Earth. It was never thought that this asteroid was going to cause any harm. However on the same day, coincidentally and unrelated a huge meteor streaked across the sky over the Ural Mountains in Russia. The sonic boom of the fireball sent shockwaves through the nearby town of Chelyabinsk. Fortunately no fatalities were caused, although over 1000 people were injured (mostly by broken glass). If a larger asteroid were to have crashed into the Earth it could have caused more disastrous consequences…

Throughout history the Earth has been pelted with various sized space junk both natural and man-made. Most of these are quite small or cause relatively localised damage over a particular area or have been sorted them out by Bruce Willis . Thankfully, throughout the human species’ life span falling asteroids or large impacts have ...

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