Ex-astronaut says NASA report on Earth-Asteroid collisions is flawed...
http://news.yahoo.com/s/space/200705...cGK9JXSmD737YB
The part I found interesting because I never even heard of this event:
Quote:
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In fact, next year is the celebration of the 100th anniversary of the Siberia-smacking Tunguska event of a 45 to 50 meter diameter asteroid. "Had it hit a couple of hours later it might have wiped out London or Moscow...instead it wiped out 2,000 square kilometers of Siberia forest and maybe a few reindeer," Schweickart observed.
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I had no idea we had an asteroid impact of that large in recent times.