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Published online 25 June 2008 | Nature 453, 1157-1159 (2008) | doi:10.1038/4531157a
News Feature
Planetary science: Tunguska at 100
The most dramatic cosmic impact in recent history has gathered up almost as many weird explanations as it knocked down trees, writes Duncan Steel.
_Sooner or later, it was bound to happen. On June 30, 1908, Moscow escaped destruction by three hours and four thousand kilometers — a margin invisibly small by the standards of the universe.
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