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Parallel Universes, Time Travel, Physics, & Meaning of l [message #50790]

Wed, 08 October 2003 15:03

TheGunrun
Messages: 801
Registered: April 2003
Location: nj

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Cosmic Strings
Yet another theory for how we might travel back and forth through time uses the idea of cosmic strings, proposed by Princeton physicist J. Richard Gott in 1991. These are -- as their name suggests -- string-like objects that some scientists believe were formed in the early universe. These strings may line the entire length of the universe and are under immense pressure -- millions upon millions of tons.
These cosmic strings, which are thinner than an atom, would generate an enormous amount of gravitational pull on any objects that pass near them. Objects attached to a cosmic string could travel at incredible speeds, and because their gravitational force distorts spacetime, they could be used for time travel. By pulling two cosmic strings close together, or one string close to a black hole, it might be possible to warp spacetime enough to create closed time-like curves.

A spacecraft could be turned into a time machine by using the gravity produced by the two cosmic strings, or the string and black hole, to propel itself into the past. To do this, it would loop around the cosmic strings. However, there is still much speculation as to whether these strings exist, and if they do, in what form. Gott himself said that in order to travel back in time even one year, it would take a loop of string that contained half the mass-energy of an entire galaxy. And, as with any time machine, you couldn't go back farther than the point at which the time machine was created.

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[Message index]

		Parallel Universes, Time Travel, Physics, & Meaning of l By: TheGunrun on Wed, 01 October 2003 14:12
		Parallel Universes, Time Travel, Physics, & Meaning of l By: boma57 on Wed, 01 October 2003 14:18
		Parallel Universes, Time Travel, Physics, & Meaning of l By: John Shaft Jr. on Wed, 01 October 2003 14:23
		Parallel Universes, Time Travel, Physics, & Meaning of l By: Jaspah on Wed, 01 October 2003 16:24
		Parallel Universes, Time Travel, Physics, & Meaning of l By: U927 on Wed, 01 October 2003 16:33
		Parallel Universes, Time Travel, Physics, & Meaning of l By: TheGunrun on Wed, 01 October 2003 17:13
		Re: Parallel Universes and physics By: SomeRhino on Wed, 01 October 2003 19:56
		Parallel Universes, Time Travel, Physics, & Meaning of l By: z310 on Wed, 01 October 2003 20:46
		Parallel Universes, Time Travel, Physics, & Meaning of l By: Crimson on Wed, 01 October 2003 21:46
		Parallel Universes, Time Travel, Physics, & Meaning of l By: Blazer on Wed, 01 October 2003 22:00
		Parallel Universes, Time Travel, Physics, & Meaning of l By: boma57 on Thu, 02 October 2003 04:27
		Parallel Universes, Time Travel, Physics, & Meaning of l By: Deactivated on Thu, 02 October 2003 04:32
		Parallel Universes, Time Travel, Physics, & Meaning of l By: Scythar on Thu, 02 October 2003 05:49
		Parallel Universes, Time Travel, Physics, & Meaning of l By: Blazer on Thu, 02 October 2003 09:35
		Parallel Universes, Time Travel, Physics, & Meaning of l By: EnderGate on Thu, 02 October 2003 09:48
		Parallel Universes, Time Travel, Physics, & Meaning of l By: Cpo64 on Thu, 02 October 2003 10:54
		Parallel Universes, Time Travel, Physics, & Meaning of l By: EnderGate on Thu, 02 October 2003 12:17
		Parallel Universes, Time Travel, Physics, & Meaning of l By: boma57 on Thu, 02 October 2003 12:32
		Parallel Universes, Time Travel, Physics, & Meaning of l By: TheGunrun on Thu, 02 October 2003 14:16
		Parallel Universes, Time Travel, Physics, & Meaning of l By: General Havoc on Thu, 02 October 2003 15:28
		Parallel Universes, Time Travel, Physics, & Meaning of l By: TheGunrun on Thu, 02 October 2003 16:17
		Parallel Universes, Time Travel, Physics, & Meaning of l By: boma57 on Thu, 02 October 2003 16:48
		Parallel Universes, Time Travel, Physics, & Meaning of l By: burnt_out on Thu, 02 October 2003 23:34
		Parallel Universes, Time Travel, Physics, & Meaning of l By: Scythar on Fri, 03 October 2003 00:02
		Parallel Universes, Time Travel, Physics, & Meaning of l By: boma57 on Fri, 03 October 2003 04:26
		Parallel Universes, Time Travel, Physics, & Meaning of l By: Scythar on Fri, 03 October 2003 05:02
		Parallel Universes, Time Travel, Physics, & Meaning of l By: wessxdog on Fri, 03 October 2003 05:23
		Parallel Universes, Time Travel, Physics, & Meaning of l By: EnderGate on Fri, 03 October 2003 08:54
		Parallel Universes, Time Travel, Physics, & Meaning of l By: wessxdog on Fri, 03 October 2003 14:26
		Parallel Universes, Time Travel, Physics, & Meaning of l By: TheGunrun on Fri, 03 October 2003 14:34
		Parallel Universes, Time Travel, Physics, & Meaning of l By: burnt_out on Fri, 03 October 2003 15:04
		Parallel Universes, Time Travel, Physics, & Meaning of l By: EnderGate on Fri, 03 October 2003 17:23
		Parallel Universes, Time Travel, Physics, & Meaning of l By: burnt_out on Fri, 03 October 2003 17:28
		Parallel Universes, Time Travel, Physics, & Meaning of l By: SomeRhino on Fri, 03 October 2003 18:19
		Parallel Universes, Time Travel, Physics, & Meaning of l By: burnt_out on Fri, 03 October 2003 18:29
		Parallel Universes, Time Travel, Physics, & Meaning of l By: Infinint on Fri, 03 October 2003 18:49
		Parallel Universes, Time Travel, Physics, & Meaning of l By: burnt_out on Fri, 03 October 2003 19:43
		Parallel Universes, Time Travel, Physics, & Meaning of l By: John Shaft Jr. on Sat, 04 October 2003 02:47
		Parallel Universes, Time Travel, Physics, & Meaning of l By: TheGunrun on Sat, 04 October 2003 07:16
		Parallel Universes, Time Travel, Physics, & Meaning of l By: boma57 on Sat, 04 October 2003 08:09
		Parallel Universes, Time Travel, Physics, & Meaning of l By: Infinint on Sat, 04 October 2003 09:53
		Parallel Universes, Time Travel, Physics, & Meaning of l By: TheGunrun on Wed, 08 October 2003 14:21
		Parallel Universes, Time Travel, Physics, & Meaning of l By: TheGunrun on Wed, 08 October 2003 15:03
		Parallel Universes, Time Travel, Physics, & Meaning of l By: Bearxor on Thu, 09 October 2003 16:54

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