I'm not sure if many of my watchers are experienced in theoretical physics or not but I've been thinking a lot about time travel and interstellar travel lately and I have a few questions that may either serve to blow your mind or may allow me to have a few questions answered. Note that some of this may be flawed, and I am very open to new knowledge so please do help me figure out this dilemma.
Interstellar space travel is an extremely common topic in such science fiction shows as Star Trek, and is touched upon multiple times in the famous movie Star Wars, but how possible is it for a human to travel to another star. Well actually it would be quite difficult to do with the technology we have today. The nearest star is Alpha Centauri which is approximately 4.367 light years away. Now based on the calculation that that light travels at about 670,616,629 miles per hour this is about 25.8 trillion miles away. Now our space crafts today can only reach about 17,500 miles per hour. This means with the technology we have now it would take us about 165,000 years to reach Alpha Centauri.
What about that whole light speed thing? What if we were able to travel at light speed? Well the average human body can withstand 17gs but only if they were hold horizontally. If we were to go from standing still to about light speed the human body would withstand about 1,000,000 gs. Basically you would be no more than a splat on your seat if even that.
Well considering we don't have the technology at this time to reduce g force it seems that we wouldn't be able to travel that way, but what about black holes? Many of us know about the existence of black holes, but for the sake of knowledge allow me to explain. A black hole is a singular point where the gravity is so intense that not even light particles can escape it. The closer you get to a black hole the more intense the gravity is.
Let's say you and I are theoretically floating outside of a black hole. If I were to get caught in it's gravitational field you would watch me slowly get closer and closer to the black hole until eventually from your perspective I would stop. This point is known as the event horizon. From your perspective I wouldn't go any further, and my journey would stop. From my perspective however I would continue towards the black hole. The gravitational pull on one side of my body would be so completely different from the opposite side that I would be infinitely stretched, which would subsequently kill me.
Let's say for the basis of scientific theory however that at this point in time earth has created a gadget would could survive this spaghettification effect, and that we could attach a camera to it. Once this gadget reaches the internal point of a black hole we would be able to see the opposite side where all light is rushing in at once. From this point we honestly have no idea what the internal point of a black hole is or what this gadget would experience. There is a gap in our knowledge here and many theories based around what exactly is beyond the inside of a black hole. This leaves a huge question. Where does all of that light go?
Well I've recently found out about a theoretical white hole. A white hole is basically the opposite of a black hole, and due to basic physics (for every action there is an equal and opposite reaction) there very well could be white holes in the universe. A white hole instead of sucking in all light pushes all light out of a singularity. Though because it is pushing out its entire mass from this singularity a white hole is extremely unstable and would last for a very short amount of time.
In 2006 we caught a glimpse of something which may have been a white hole in action. This was known as GRB 060614 for anyone who would like to look it up. This was a burst of gamma which lasted approximately 102 seconds, but here's the kicker. There was no recording of a supernovae in that vicinity which means there was basically nothing producing the gamma burst.
Now my question which may or may not be flawed is this. What if a white hole is the exit point of a black hole, but it shifts positions in the universe because leaving the exit point at a single point would rip a hole in the universe itself? If this is the case, what if our gadget were able to calculate a point to move the exit point to a certain location including such calculations as stopping distance? Would we be able to see the universe through this gadget by sending it on a course to find black holes and then eventually bring it back to earth? I don't know, but even if we can't that would be one hell of a science fiction movie.