Hi Pete, all -
The best method of diversion that I have seen involves the use of Solid State
Heat Capacity Lasers (SSHCL), as it is not affected by rotation. The laser uses
the objects own material as "fuel" for a jet reaction - the moment of force
remains the same regardless of rotation. This method was proposed by an
engineering team from NASA Langley in their CAPS (Comet and Asteroid Protection
System) study.
Evryone looks for non-nuclear charge options, but they are available if need
be. Thankfully, small objects can be diverted by kinetic impact if discovered
early enough.
E.P. Grondine
Man and Impact in the Americas
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