Questions tagged [planetary-defense]

related to the defense of a planet from a major destructive event such as an impact, or searches for or studies of objects (e.g. asteroids, comets or other near earth objects) that potentially pose such a planetary threat

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Would a kinetic impact “cloud” avoid fragmenting an asteroid to be deflected?

A problem with using a traditional kinetic impactor in one piece, like the one used by Deep Impact, to deflect a hazardous NEA, is that its effects depend on the subsurface composition of the asteroid....