Question: In the past, asteroids striking the earth have produced disastrous results. If we discovered an asteroid on a collision course with the earth, we could,

In the past, asteroids striking the earth have produced disastrous results. If we discovered an asteroid on a collision course with the earth, we could, in principle, deflect it and avoid an impact by focusing a laser on the surface. Intense surface heating from the laser could cause surface material to be ejected into space at high speed. How would this deflect the asteroid?

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