Matthew Wright

It was one of those awful coincidences. Last Friday evening I was having a few beers with a friend, in a local pub. He was calculating the likely impact energy if 2012 DA14 – due to make a close pass over Indonesia – were to ever hit us.

There are websites with Java script that do this, but it’s easy yourself if you have figures for velocity and mass –  a function of volume and density – plus the formula and a calculator. (Yes, I know it had been published, but it’s fun to do the math. I’m a geek and so are my friends. Remember…geeks won….)

Nobody realised another object was about to explode over Chelyabinsk – ‘Tankograd’ of Second World War fame.

The 1200 injured from flying glass is the largest human toll recorded from a meteor strike. The cost to Russia will be in the millions of…

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