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A comment on Directed Energy Planetary Defense and Relativistic Probes. Parent comment

Re:Directed Energy Planetary Defense and Relativistic Probes by JulianMorrison on Thursday January 07, 2016 @08:48AM (#10857849)
My guess is no. Reason: steering towards is a smaller target than steering away. If you can only point a laser from over here, it's hard to steer an asteroid any way except "thataway" (normal to the most visible surface).
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Re:Directed Energy Planetary Defense and Relativistic Probes by viggity on Thursday January 07, 2016 @10:42AM (#10858481)
unless the asteroid was closer to the sun than the earth, then you could push it so it hit earth 6 months from when you pushed it.
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