- Oct 24, 2002
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If anyone has an asteroid or comet they'd like to shoot this way, here's a calculator to help with the maths 
"Scientists at Purdue University and Imperial College London have updated their popular impact effects calculator first produced in 2004."
http://www.purdue.edu/impactearth
"Scientists at Purdue University and Imperial College London have updated their popular impact effects calculator first produced in 2004."
http://www.purdue.edu/impactearth
