Time Travel

Jessica Xaypangna
Mrs. Pecina Bernal
NSC 1
November 28, 2012

Jessica Xaypangna
Mrs. Pecina Bernal
NSC 1
San Joaquin Valley College
November 28, 2012

Time travel is the concept of moving between different points in time in a manner similarly to moving between different points in space. Once thought of as science fiction is now theoretically possible. Reading books, depicted in so many movies, lingering in many minds, can time travel really exist? Whether walking through a portal or spaceship speeding faster than the speed of light, if time traveling is indeed possible it will be considered physics, at a higher level and intelligence at which humans would not be capable of fully understanding for at least a few hundred years.
Albert Einstein, Michio Kaku, and many other scientists and physicist alike believed in the expanding of the universe as one that curves on itself in three-dimensions. Through the bending of the universe, it is thought to be some loop holes or shortcuts allowing one to cut or travel through time. Black holes or wormholes are considered to have the power or the ability to do this.
Speed has an important role in the rate at which and how we experience time. Time passes more slowly the closer you approach the cosmic speed limit which we call the speed of light. For example, the hands of a clock in a speeding train move more slowly than those of a stationary clock. A human passenger wouldn't feel the difference, but at the end of the trip the speeding clock would be slowed by billionths of a second. If a train could travel 99.999 percent of light speed, only a year would pass onboard for every 223 years back at the train station.
Time on earth is much slower than time in space, imagine there are two clocks synchronized, both ticking exactly the same, down to millionth of a second. Both clocks are traveling in different directions, one going at the speed of light and the other at twice that speed. The clock that travels twice the speed has enough time to make and u-turns, make quick stops and still won’t fall behind in that time zone.
When traveling in a spaceship moving faster than the speed of light, everything around you seems to slow down. For example: If an astronaut travels into space for six months at a substantial fraction of light speed and takes another six months to return to Earth, he would land in the future. While a year will have elapsed on the astronaut's clock, tens of thousands of years may have gone by on Earth, depending on how close to light speed the astronaut traveled, Vice-versa when you are not in the spaceship, but just watching, you would see it moving at faster than any known thing in the universe.
Today we know black holes or wormholes require a lot of energy to manipulate, energy in which will take millenniums for humans to create. It is so strong, not even light can escape. There are two types of energy; scientist and physicist call it negative mass and negative matter. Years of searching for these types of energy have been unsuccessful in nature.
Also concerns about black holes and wormholes are the stability, the radiation that is produced and what happens when it closes while travelers are part way through. The gravity within is so powerful, nothing can escape it, not even light. Through years of research we know that objects that pass the event horizon of a black hole never returns.
If humans did find such energy, the big problem is getting enough of that negative energy or negative matter to manipulate it. Our technologies today would be nowhere close to harnessing it. Matthew Visser of Victoria University in Willington, New Zealand estimated the amount of energy that would need to open a one-meter wide wormhole would be comparable to the mass of Jupiter.
The nearest planet that may hold life can be millions of light years away. If another life being, or visitor to our planet, they would have to be hundreds maybe even thousands of years more advance than us. The chance of other beings sharing their knowledge and technologies would be very slim. They would fear we might be a threat, the fact that our world has not found peace amongst ourselves.
In conclusion, although we have never seen evidence of time traveling or what happens to objects entering or exiting black holes and worm holes, we believe in its existence. Physics allows it, therefore it is theoretically possible. The energy that is required to build a black hole would be twice the mass of earth. If we were able to find the energy big enough to create a black hole we would be able to move forward in time, Scientist and Physicist are eager for the discovery, but this point in time; humans haven’t found the energy and haven’t reached the knowledge.

References
Retrieved June 06, 2012
http://discovermagazine.com/2008/mar/teleportation-very-possible-next-up-time-travel/article_view?b_start:int=1&-C=