A3_1 Deflecting Asteroids using high-energy lasers

Liam Ryan, Dennis Karazhov


This article investigates the power of a laser needed to ablate the surface of the asteroid Apophis to produce a jet stream that will impart a force onto it, enough to deflect it from a direct trajectory to Earth. It is found that the power output needed is in the order of MW. The difficulty is in producing a laser beam with a very small divergence angle.

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