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From: gwyn@brl-tgr.ARPA (Doug Gwyn <gwyn>)
Newsgroups: net.physics
Subject: Re: Re: speed
Message-ID: <11281@brl-tgr.ARPA>
Date: Sun, 16-Jun-85 04:09:00 EDT
Article-I.D.: brl-tgr.11281
Posted: Sun Jun 16 04:09:00 1985
Date-Received: Thu, 20-Jun-85 09:02:43 EDT
References: <359@osiris.UUCP> <56@rtp47.UUCP> <28@ucbcad.UUCP>
Organization: Ballistic Research Lab
Lines: 8

> If the universe is closed (I mean space is of the type where
> all straight lines meet), wouldn't the twins be able to meet
> without either of them having undergone acceleration?

In some cosmological models, they might meet.  However, the
original twin paradox assumes that special relativity can be
applied.  For cosmological problems one has to use heavier
artillery.