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Originally posted by Jim.Hero
reply to post by CPYKOmega
actually a 250 meter asteroid is quite a bit
remember the arizona crater? can't recall the actual name... well it was created by an asteroid roughly 130 feet (40 meters) and the crater itself is 1.3 meters aprox.
so, something 5 times as big WILL do something if it hits earth
and, well, most asteroids do not take too much crossing the upper atmosfere, and telling by those 250 meters it wouldn't do much good to us, humankind
so... bottom line is: if, at any given time, an asteroid of that magnitud hits earth, uuuuff, god help us...
the good thing? it wont hit us any time soon