Today is 'Near Miss Day!' - On March 23rd, 1989, a mountain sized asteroi
> > passed the Earth within 500,000 miles. A very close call according to NAS
> > The impact would have equaled the strength of 40,000 hydrogen bombs, creat
> > a crater the size of the District of Columbia and devastated everything fo
> > 100 miles in every direction.
That's just the impact damage. It would've been an extinction event.
Maybe not quite that bad..
In Tunguska Russia in 1908 a meteor about 1/16 that size struck the
earth and, although definitely a lot smaller, that blast had little
effect beyond where it struck or on the atmosphere. It flattened trees
over an area of about 830 sq miles (about 17 miles in all directions)
which is bad enough, but I think it not likely the one you mentioned
would erase all life on the planet. Granted it Could possibly mess up
things like weather and temperatures for a long time but depending on
where it hit would make a huge difference. If it landed in the ocean
you'd get a pretty big tidal wave for sure, but maybe no lingering
problems after that.
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* SLMR Rob * Helm, see if you can't get this thing back in the water
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