Re: ASTRONOMY: Nuclear bombs will not save the earth

From: Everitt Mickey (
Date: Sun Jun 25 2000 - 15:09:19 MDT

>> Doug Jones wrote:. The total delta-V needed to divert an object from
>> collision given 20-30 years advance notice is only a few millimeters per
>> second. This impulse would be delivered, not by a cratering surface or
>> subsurface explosion, but by a series of many blasts, each at an
>> altitude of .4 radius from the surface....

That being the about a laser instead?

Wouldn't a properly placed laser beam of the correct intensity cause a
similar spalling effect with similar changes of orbit?......I would think
that an orbital 'droid watch laser station would be much cheaper and more


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