Target Earth

In commemoration of the Centennial of the Great Tunguska Explosion of June 30th, 1908 I am posting Greg Easterbrook’s interview with Atlantic monthly concerning the threat posed by Earth crossing asteroids and comets. Mr. Easterbrook’s recent article ‘The Sky is Falling’ makes for some interesting and eye opening reading. In it he asks the question ‘The odds that a potentially devastating space rock will hit Earth this century may be as high as one in 10. So why isn’t NASA trying harder to prevent catastrophe’? Why indeed?

All this month I will be posting a series of articles entitled ‘Before and After Tunguska’ that explores the evidence from the fields of archaeology and the physical sciences that that our ancestors bore witness to the wrath of the heavens. In the following weeks I will also discuss the need for a new mandate for NASA to deal with potential threats that may lay ahead for humanity.

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