As most now accept an astroid or comet ended the reign of the dinosaurs. Hollywood's idea of dealing with the threat is to fly crews to the object and blow it up. NASA's solution involves mass drivers, impact airbags of gases and dust, lasers, solar saiks and etc. **Throwing out Hollywood's solutions for lacking in reality of physics and current technologies and dispelling NASA's solutions for being costly and time consuming (if Earth is surprised without enough warning time) Perhaps an other solution combining the two thoughts is possible. ***Place into orbit 4 satelight "six guns" along the equator some 26,000 miles (Clarks Belt). Each satelite would have 6 or so nuclear weapons. The first missile would be a megaton or so in scale. The warhead would be placed near the tail section of a large steel rod of about half a meter in diameter about 20 meters or so long which would act as a peritrator dart much like the that of the M1 Abramas tank round. It would be launched 24-72 hours first before the other 5 lesser nuclear missiles; it would impact just off center of the incoming body, penitrate to a max depth before blowing up, hopefully deflecting some or most of the mass to miss the Earth. The follow up strike of the remaining lesser nuclear warheads could then strike at smaller, but dangerious objects still on an impact course. ****With four such satelites at least 2 of them would be in a possition to target an object. Even if the Asteriod is a rubble pile of lesser objects, the primary strike and its follow up strike of one satelites should break the loose gravitation bounds. And if need be the second satelight who would be in possion could act as insurance. *****Current land based missiles being the final, last ditch effort for any (hopefully much smaller objects) survivors.