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From: sas@leadsv.UUCP (Scott Stewart)
Newsgroups: net.movies
Subject: Re: Re: Why shouldn't time travel leave you in the same spot?
Message-ID: <609@leadsv.UUCP>
Date: Fri, 13-Sep-85 11:48:36 EDT
Article-I.D.: leadsv.609
Posted: Fri Sep 13 11:48:36 1985
Date-Received: Mon, 16-Sep-85 21:02:13 EDT
References: <9793@ucbvax.ARPA> <323@looking.UUCP> <2243@sdcrdcf.UUCP> <1016@rayssd.UUCP>
Organization: LMSC-LEADS, Sunnyvale, Ca.
Lines: 44

In article <1016@rayssd.UUCP>, m1b@rayssd.UUCP (M. Joseph Barone) writes:
> 
> 	When an airliner travels from the East Coast to the West Coast,
> no one is amazed that it travels along an arc of a circle rather than
> tangent to one.  When traveling through any of the space dimensions,
> gravity has an effect on the moving object.  In fact, traveling for-
> ward in time is also affected by gravity.  A stationary time machine
> should glue the traveler to the exact location on Earth no matter how
> far back or forward in time he goes.
> 
> Joe Barone,	{allegra, decvax!brunix, linus, ccice5}!rayssd!m1b
> Raytheon Co,	Submarine Signal Div., Box 330, Portsmouth, RI  02871
 
According to the Good Doctor, Isaac Asimov, in an article in a 
science fiction movie book (I believe the title was something like 
"Science in Science Fiction", but I'm not sure if this was the title 
of the book or article) Joe statement is incorrect. To travel in time, 
you must travel in space as well to end up in the same relative position 
as when you left. Since the Earth moves around the sun, the sun around 	
Milky Way, and the Milkey Way around the universe, if you go back in time,
the earth is no longer in the same position as it was when you left. Most
time travel stories show the character moving only through the time 
dimension, and he would thus emerge again in the middle of space. 
Gravity would have no effect on time travel, since time is a dimension
not effected by gravity (I.E. An Earth hour is the same length on Earth
or Jupiter.) Traveling through time is not the same as traveling through
the other 3 dimensions in which gravity would effect your ability to 
move through them. For a time machine to travel in time and emerge
at the same location on Earth, it would have to be able to accurately
calculate the angular displacement of the Earth, Sun, and Milky Way, or
be pretty darn lucky. 

		" I met him in swamp down on Dagobah 
            	    where the waters always bubbling like
		    a giant carbonated soda, S-O-D-A, Soda
		  I saw him sitting there on a log and
		    I asked him his name, and in a raspy 
		    voice he said Yoda, Y-O-D-A, Yoda,
	            Yo-Yo-Yo-Yoda"



					Scott A. Stewart
					LMSC


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