Google Tech Talk: The Use of Nuclear Weapons to Disrupt or Divert Asteroids
(Google Video, 1 h 13 min). The title says it all: a lecture on the use of nuclear explosives to protect the Earth from asteroid impacts.
Nuclear explosives are a mature technology with well-characterized effects. Proposed utilizations include a near asteroid burst to ablate surface material and nudge the body to a safer orbit, or a direct sub-surface burst to fragment the body.
In addition to providing an greater understanding of the results of applying nuclear explosives to NEO-like bodies, these simulations suggest numerical and laboratory to improve the predictive capabilities. Finally, we will comment on some of the popular misinformation abounding about the utility of nuclear explosives.