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Old 05-30-2019, 05:15 AM
 
Location: PRC
3,236 posts, read 3,361,904 times
Reputation: 2950

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It appears as if the current thinking (by some scientists) might be that asteroids reassemble themselves from the pieces of an explosion due to gravity attraction.

See here

Not that I know anything about it all, but I would have thought that an explosion in space near or on an asteroid will push the pieces much too far away to be reassembled by the small amount of gravity caused by the asteroid. I also would have thought that many smaller pieces hitting Earth is almost as bad as one large piece - except that they would not cause one extinction event, but rather many smaller events which collectively might cause the same effect in the end.
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