Asteroid impact avoidance Edward Teller

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following 1994 shoemaker-levy 9 comet impacts jupiter, teller proposed collective of u.s. , russian ex-cold war weapons designers in 1995 planetary defense workshop @ lawrence livermore national laboratory (llnl), collaborate design 1 gigaton nuclear explosive device, equivalent kinetic energy of 1 km diameter asteroid. in order safeguard earth, theoretical 1 gt device weigh 25–30 tons, hence light enough lifted on russian energia rocket , used instantaneously vaporize 1 km asteroid, divert paths of extinction event class asteroids (greater 10 km in diameter) within few months of short notice, while 1-year notice, @ interception location no closer jupiter, capable of dealing rarer short period comets can come out of kuiper belt , transit past earth orbit within 2 years. comets of class, maximum estimated 100 km diameter, charon served hypothetical threat.








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