Hi Paul -
I was amazed to learn of the iron impactor which killed the dinosaurs.
I was also amazed to learn how very large comet fragments further fragment when
they hit the Earth's atmosphere at hypervelocities. Well, then, they don't all
just turn into magic comet dust then, the earlier load from NASA.
You learn something new everyday. Today I learned that it pays to tow the line
that comet impacts are no more than 5% of the impact hazard.
E.P. Grondine
Man and Impact in the Americas
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