Factors to Go Back - Part 4: The Wormhole

Welcome back time travel theorists of the internet!

Today, we will be analyzing yet another purely theoretical way of time travel: the wormhole. To start off here, we must ask, "What is the wormhole?" The wormhole is a "cut" or shortcut, yet another defect in space-time. Although purely theoretical, scientists have found it possible that they exist, however very small in size.

Exploring the inter webs once more, I found the Live Science website and found more about the wormhole than I had expected. I found that the wormhole would be able to send a ship or any object from one end of the tunnel to the other, at the speed of light... sort of. What it really would be doing is taking a shortcut, making the time and distance to travel short.

One thing that we have found in actually making wormholes is the immense amount of energy to make the wormhole turn into an actual means of time travel, rather than location travel. That, and then the stability of opening it by exotic matter. These challenges in the wormhole itself prevent any further research from being able to even control, or find a wormhole. However, theoretically, if controlled and directed in a certain way, it can be absolutely used to travel through time. Although it is theoretical as a real thing, it bounces off Einstein's theory of general relativity, so there is some hope for any existence of it.

At least one of the tunnels would have to be accelerated
through time, at a certain point, for this to be a viable
means of time travel.

So, could wormholes actually be used to travel through time if any existed at all? Could we be able to generate one? How would we control it? Many questions need to be answered to know whether THIS theory would be a valid way to time travel.

Thank you for coming back to TARDIS talk and exploring the wonder of time travel and the many possibilities! Now, I have covered all that I can cover, or everything that has been researched thoroughly, in traveling back in time. Next time, I will be explaining something that I probably should have gone over with you all at the beginning: the dangers of going back in time. For now, goodbye my friends and I will see you then!

Factors to Go Back - Part 3: Cosmic Strings

Welcome back friends to TARDIS Talk!

Last time, we took a glance into a cosmic phenomena that was theoretically capable of time travel: the black hole. Today, we will be looking at one other cosmic phenomena, somewhat similar to the black hole. We will be looking at the Cosmic String.

I went into the internet again to search for information on these defects in space time and I came upon the Anderson Institute website. I found very interesting information, part of it being applying the cosmic string to an actual time machine construction.

To start off, what is the cosmic string? A cosmic string is a "string" or threadlike object throughout the universe and space. It is extremely thin, even smaller than an atom that is pushed under immense pressure. Because of this very reason, it has a massive gravitational pull to anything relatively near to it.

(The box and red dots represent the universe;
the white lines, cosmic strings)

The way this works in time travel is time dilation. This means that if you put two of these defects in space together, they will create a time - like curve that if traveled around a certain way, the gravity and velocity could propel you faster, slowing down time and ultimately bringing you back to the past. This brings us back to relativity, so be sure to keep that in mind. By this theory of connecting two cosmic strings, or one string to a black hole, we could be able to use them to travel in time.

These strings are all mostly theoretical and have yet to find actual legitimate evidence of it in space. Although we have yet to find actual cosmic strings to use at our disposal, scientists have discovered clumps of matter being pulled close together in space, suggesting a gravitational phenomena.

Anyway, thank you for tuning back in to TARDIS Talk. Next time, we will be exploring yet another theory in time travel: the Wormhole.

Once again, I thank you all for coming to take part in TARDIS Talk! And now, I must bid you goodbye.... for now.

Factors to Go Back - Part 2: The Black Hole

Welcome back everyone, to Tardis talk! 

Now, last week we started off our backwards time travel with the theory of going faster than the speed of light. Today, we will be talking about existing cosmic phenomena within our galaxy and other galaxies: The Black Hole.

I found more information on the black hole from several websites, all addressing the same thing, that the black hole is purely theoretical. One of the sites that helped me understand a bit more was the HowStuffWorks site, once again. What I found was not extensive or vast information on the black hole, but rather just a brief introduction to what it is, since no one has really confirmed if it will really work in time travel or not. 

What HowStuffWorks talks about is what the black hole was and, in theory, what it can do.  First off, what is the black hole? A black hole is what happens when a star dies. When the star dies, the nuclear fusion reactions stop and at the same time, the star's gravity pulls in objects and compresses the core. As the core compresses, it eventually creates a supernova explosion and the aftermath is a highly compressed and massive core. This core now becomes a black hole, creating a hole in space-time, hence the name "black hole". 

How does time travel tie in to the black hole? Well, since it is a hole in space time, there a theories where the hole can transport to different places and possibly, different times. Think of this black hole as a tunnel, where the beginning is the black hole and the end is the white hole. The white hole is basically the exit where, unlike the black hole, spits out objects entering from the black hole. Considering this theory and the fact that it is technically a hole or rip in space-time, time travel could actually be possible. However, we couldn't really control it. 

There are many obstacles preventing actual travel via black hole, considering it would probably crush you when you enter it (unless you're traveling via KERR black hole). Overall though, this is just one other theory to time travel, one that might be actually accessible, although near impossible. 

Next time, on TARDIS Talk, we will be talking out the Cosmic Strings, yet another theory for time travel. No, its not a literal string if you're wondering, but more like a defect in space and time, kind of like a black hole.

Anyway, until next time my friends! Keep it classy.