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Asteriod Hitting Earth


name         Scott W.
status       other
age          30s

Question -   Could an un-noticed asteroid of any size really 
strike Earthat any time? At what distance and of what mass would a body
be unfailingly spotted every time?

Yes, relatively few people are watching asteroids with the intention of
warning us when one threatens.  After a body larger than a basketball
has entered the atmosphere, everyone would notice.

Tim Mooney
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