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Date: Sun, 8 Nov 92 05:14:38
From: Space Digest maintainer <digests@isu.isunet.edu>
Reply-To: Space-request@isu.isunet.edu
Subject: Space Digest V15 #398
To: Space Digest Readers
Precedence: bulk
Space Digest Sun, 8 Nov 92 Volume 15 : Issue 398
Today's Topics:
Comet deflection & mining
Lunar effects on living organisms
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----------------------------------------------------------------------
Date: Sun, 8 Nov 1992 07:34:28 GMT
From: Steve Linton <sl25@cus.cam.ac.uk>
Subject: Comet deflection & mining
Newsgroups: sci.space,alt.sci.planetary
Source-Info: Sender is really isu@VACATION.VENARI.CS.CMU.EDU
In article <BxBGKy.34H@techbook.com>, szabo@techbook.com (Nick Szabo) writes:
|> Deflecting anything but the strongest nickle-iron asteroid
|> with a nuclear explosive is silly. Many asteroids are probably
|> rubble piles, not single big rocks, and comets are so fragile we've
|> seen some calve off big chunks and obliterate themselves just from
|> internal gas pressure. For a comet, farting can be suicide!
You don't bomb the comet. You set off a fusion explosion a couple of km away
(maybe even more) to melt the skin on one side and produce a sudden burst of
outgassing. This might cause the comet to calve, though probably no large pieces
would still be on impact trajectories. If one was, repeat as needed.
------------------------------
Date: Sun, 8 Nov 1992 07:56:11 GMT
From: Steve Linton <sl25@cus.cam.ac.uk>
Subject: Lunar effects on living organisms
Newsgroups: sci.space
There are some definite examples of this, mediated by tides. The mass coral
spawniong on the Great Barrier Reef, for example, takes place 4-5 days after the
October full moon. I don't know of any in land animals.
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End of Space Digest Volume 15 : Issue 398
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