Re: Space

Warrl kyree Tale'sedrin (
Thu, 1 Jan 1998 13:48:16 -0800

> From: John K Clark <>

> On Wed, 31 Dec 1997 "Michael M. Butler" <butler@comp*>
> Wrote:
> >I read an Analog speculative-fact article about foaming
> asteroidal >NiFe into (big, you bet) lifting bodies
> with a reasonable >(comparable to human free
> fall--ca. 200 MPH) terminal velocity [...] >aero
> heating should stay well below the level at which any metal
> >would burn off.
> But that doesn't really address the problem. A lifting body would
> give you more control over where it hit the ground, but if a huge
> fast moving object is to come to a stop then the colossal kinetic
> energy in it must be transferred as heat to the Earth or its
> atmosphere. I'd rather rock absorb that mammoth force than the air,
> and if was a really big asteroid it wouldn't matter where it hit the
> ground.

Assemble really huge power storage devices (batteries, capacitors,
whatever) and wrap them in something that will convert the re-entry
heat to electricity. Charge them up on the way down and then hook
them to the power grid for a while.

> John K Clark
> Version: 2.6.i
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