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/snip/...regarding the best way to precisely deflect an
earth-bound asteroid into a benign orbit around the earth.
A great problem; I actually heard a lecture by Freeman Dyson given on this
topic at Purdue University about 8 yrs ago.
.. how far out you could
still land on such asteroids and erect mass throwers on the surface to
deflect the asteroid. You need to fling a lot of mass over a lot of time,
and the earlier you start the better off you are. The conclusion wasn't
very optimistic yet, but in a century or two (assuming our luck holds)
we are in good shape. Until then, we should be surveying as frantically
as we can.
Dan M
Dan MacIsaac