Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 11/03/84 (WLS Mods); site astrovax.UUCP Path: utzoo!watmath!clyde!burl!ulysses!mhuxr!ihnp4!astrovax!wls From: wls@astrovax.UUCP (William L. Sebok) Newsgroups: net.physics Subject: Re: Re: Big Bang Impossible Message-ID: <516@astrovax.UUCP> Date: Thu, 13-Dec-84 17:58:04 EST Article-I.D.: astrovax.516 Posted: Thu Dec 13 17:58:04 1984 Date-Received: Fri, 14-Dec-84 07:23:44 EST References: <394@petsd.UUCP> Organization: Princeton Univ. Astrophysics Lines: 19 > This expanding, spherical universe is quite different > from the Schwarzschild solution of the Einstein equations > which is commonly known as a "black hole." One difference is > that the black hole is a stationary or slowly changing > configuration, whereas the expanding universe clearly is > rapidly changing. No. In the black hole solutions it is a bit tricky what is meant by time and space, especially since inside the horizon the roles and space are reversed. In the reference frame of one falling into a black hole the black hole is a quite dynamic collapsing universe. Time reversed black hole solutions exist, sometimes called "white holes". The main problem with such a solution is that it is not known how one could exist except if it existed from the beginning. However this is not a problem if the white hole is our whole universe. -- Bill Sebok Princeton University, Astrophysics {allegra,akgua,burl,cbosgd,decvax,ihnp4,noao,princeton,vax135}!astrovax!wls