I wonder how many of those big rocks have flown by us without us knowing.
It came as close as a high orbiting sat and that is a close encounter in anyones books. With enough power or so the newscaster said to wipe out an entire country, I wonder how big, it is something to think about.
We can breath a sigh of relief now but the question remains how many others. I doubt if they can see them all, the black sky is a big place and how long have we being doing this, recording these events?
If history tells us these things are infrequent or if they occur regularly, what can we expect? Do we really know?
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