[ExI] Mining the Sky SL Talk I gave today
thespike at satx.rr.com
Mon Apr 26 21:07:57 UTC 2010
On 4/26/2010 2:19 PM, spike wrote:
>> > You're mining an asteroid of mostly iron anyway? Build a
>> > disposable re-entry shell, then nudge the shell into a
>> > decaying, Earth-entry orbit...
> Cool idea, especially if we can manage to do the re-entry without a control
> system and without a thruster, which would be useless without a control
> system. Then the challenge becomes finding the thing. Without a control
> system, and assuming a re-entry body made entirely from on-orbit material
> and assuming reentry by atmospheric decay of the orbit (no parachute or
> thrusters available) the uncertainty in landing means it could land anywhere
> on the globe.
Years ago people were talking about shaping asteroid ore into lifting
bodies and firing them at Earth. No controls, as I recall. Given the
computerized systems needed to get the orbiter down, I assume this is
pretty far fetched (as Spike implies).
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