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- Newsgroups: sci.space
- Path: sparky!uunet!wupost!usc!rpi!think.com!yale.edu!jvnc.net!princeton!csservices!atomic!ida
- From: ida@atomic (David Goldschmidt)
- Subject: Dyson Spheres
- Message-ID: <ida.721202076@atomic>
- Summary: not real spheres?
- Keywords: civilizations, dyson
- Sender: news@csservices.Princeton.EDU (USENET News System)
- Organization: Princeton University, Dept. of Computer Science
- Date: 8 Nov 92 05:54:36 GMT
- Lines: 23
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- One of the recurring problems in the Dyson-sphere debate is how to hold up the
- poles, which won't be orbiting in any helpful way. This problem doesn't come
- up with Niven's ringworlds, even very wide ones (significantly wider than the
- diameter of the sun) What would a very wide ringworld look like? If seen
- from the same plane as the ring, it could look very much like a Dyson Sphere
- (It would completely block the star). One can assume that any civilization
- would build such a thing in it's ecliptic plane. The question then is: Does
- our sun lie in the ecliptic of nearby stars. It seems feasible to me that
- most solar systems have parallel ecliptic planes (lined up with the plane of
- the Milky Way), which would mean that all but the closest stars are essentially coplanar.
- Does anybody know the relationship between the ecliptic of our solar system
- and the Milky Way?
-
- Another possibility to avoid collapsing poles: have two or more ringworlds,
- inside each other, at various angles. Each spot on the outer world would
- periodically go into the shadow of the inner one, but this shouldn't be a
- prohibitive problem. The mass of ringworlds would look very much like a
- Dyson Sphere from a distance.
-
- Dave Patterson, guest on this account.
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-