Theoretical+Time+Travel

__Theoretical Time Travel__

Space time is basically, the dimensions of space and time that are combined into a single continuum. In a Euclidean space perspective, space is regarded as three dimensions and time as one dimension. Space time is usually interpreted as space being the third dimension and time being the fourth. Space time has been seen is writing from the Incas to H.G. Wells,The Time Machine. Space time is important to time travel because when traveling through time, you need are in the dimensions of space time.
 * Space time **

Another way of time traveling is to travel faster than light. The only problem with this theory is that you can't travel the speed of light, but very close to the speed of light. But if we were able to travel almost the speed of light, then time would, literally go slower from the traveler's perspective. Albert Einstein found out that if you go faster than the speed of light, then you would go backwards in time. According to Einstein, the faster something moves, then the slower time passes. This happens because when you go faster than light, light literally slows down enough that you go back in time.
 * Faster Than Light Time Travel **

Simply, a wormhole is a "short cut" through space time (see Space time). The definition of a wormhole is "a compact region of space time whose boundary is topologically trivial but whose interior is not simply connected." -Wikipedia. A wormhole occurs when two parts of the 2 dimensional and then is folded along a third dimension, then it makes it so the wormhole can "bridge" (this is so you can imagine what a wormhole would look like because it is an unvisuable structure which is in 4 or more dimensions).The most popular kind of wormhole is the Travers able wormhole. In this theory, it says that if you go through a worm hole then you can appear out the other side any where, at any time, in any universe. Wormhole connect two parts of space time which makes it so you can time travel. Except that if we use a wormhole to time travel, general relativity says we could not go back in time to before the wormhole was transformed into a "time machine." Currently, physics only say that it is only possible to be able to time travel by going through a worm hole.
 * Worm Holes **

A parallel universe is another universe that is running "parallel" with our own. The difference between our universe and the other universes is that every universe has some difference from each other ranging from you not brushing your teeth this morning to the earth colliding with the sun in 20,000 B.C.E. to there being no oxygen on earth. So, theoretical, there are an infinite number of universes cohensiding with each other. It is very hard to travel between universes because (according to Doctor Who) every time you travel back and forth you rip through the walls of the dimension, leaving the world around you cracked with fault lines of holes in reality. If you travel back and forth to many times, then the dimension shatters and the universe is destroyed. In some universes there are "holes in reality" which lead into other universes via the void. Between some of the universes is what is called the Void. The void is literally nothing, No physics, no sound, no thought. In some universes there are "holes in reality" which lead into other universes via the void.
 * Parallel Universes **

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