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From: REM@MIT-MC@sri-unix.UUCP
Newsgroups: net.space
Subject: PM-Vega Halo,620
Message-ID: <4297@sri-arpa.UUCP>
Date: Wed, 17-Aug-83 22:04:00 EDT
Article-I.D.: sri-arpa.4297
Posted: Wed Aug 17 22:04:00 1983
Date-Received: Sun, 21-Aug-83 03:20:53 EDT
Lines: 12

From:  Robert Elton Maas <REM @ MIT-MC>

That article refers to it as a "shell", i.e. a spherical surface. The
asteroid belt of our Sun is more like a ring. Was that a mistake in
terminology or has the Vegan system definitely been identified as a
shell instead of a ring?

Perhaps the shell is really a Dyson sphere, i.e. artificial. Do the
current observations refute that possibility? I would rather doubt a
shell of natural particles could remain after a billion years, while a
ring could. If it's really a shell that would seem to indicate
somebody's artificially maintaining it.