Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.3 4.3bsd-beta 6/6/85; site ucbvax.BERKELEY.EDU Path: utzoo!watmath!clyde!burl!ulysses!bellcore!decvax!ittatc!dcdwest!sdcsvax!ucbvax!space From: michaelm@3COMVAX.UUCP Newsgroups: net.space Subject: Re: "At the moment Uranus's south pole points..." Message-ID: <8602271712.AA23782@oliveb.ICO> Date: Thu, 27-Feb-86 12:12:12 EST Article-I.D.: oliveb.8602271712.AA23782 Posted: Thu Feb 27 12:12:12 1986 Date-Received: Sat, 1-Mar-86 18:31:45 EST References: <860217-235409-1418@Xerox> Sender: usenet@ucbvax.BERKELEY.EDU Organization: 3Com Corp; Mountain View, CA Lines: 22 I believe that north and south poles are defined on the basis of the direction of rotation. That pole is the north pole (regardless of the orientation in which it points) which is the axle of rotation in the same direction as Earth. Thus Venus's north pole is defined to point nearly due south with respect to Earth because its rotation takes place in the opposite direction. Cheers! Michael McNeil ..!ucbvax!hplabs!oliveb!3comvax!michaelm *Salvati*. Now what shall we do, Simplicio, with the fixed stars? Do we want to sprinkle them through the immense abyss of the universe, at various distances from any predetermined point, or place them on a spherical surface extending around a center of their own so that each of them will be at the same distance from that center? *Simplicio*. I had rather take a middle course, and assign them an orb described around a definite center and included between two spherical surfaces... Galileo Galilei, 1638, *Dialogues Concerning Two New Sciences*