June 8, 2014

The Idea Of Time Travel- The World Of Universe

Have you ever imagined yourself in a spacecraft or on the rough surface of Moon? Even I wouldn't have thought about this if I had not read this book of Stephen Hawking. It consists of all the interesting things in the world of universe. Out of all these things, something which I read was so fascinating that I just couldn't wait to write it here. And there all of it written below-
Before introducing you to the world of time travel,there's some information that qualifies you to read the further part.

  • Everything in our Universe takes time to travel, even light.
  • In space, light always travels at the maximum speed that is possible: 186,000 miles per second (300,000 km per second). This speed is called the speed of light
  • When light leaves the Sun, it takes about 8 minutes and 30 seconds to reach us on Earth. However, this is considered a very small duration of time, though it travels approximately  1,53,00,00,000 km !!!
  • Though the distance between Sun and The Earth is 1,53,00,00,000, still it is the closest  star to the Earth. In fact, the second closest star to the Earth which is Proxima Centauri, is 40280 billion km away.
  • Due to these large distances in space, distance is measured in terms of light-years, which is the distance light travels in one year. A light-year is almost 6,000 billion miles (around 9,500 billion km). Therefore, it takes approximately 4.24 years for light to reach from Proxima Centauri to Earth at the speed of 300,000 km per second!!!!!!! 

This world is made up of fascinating things and I hope I proved that in the previous 10 or 15 lines. But how is all this stuff related to time travel? For this you need to think creatively, scientifically and innovatively. What I am going to explain next was thought by Einstein. I just modified all that science into simple logic, just for you. There is nothing in the laws of physics to prevent time travel. It may be extremely difficult to put into practice; but it is not impossible.

1) What we are seeing now has taken place before?
Let us assume that we see the nebula of a star just now. This nebula is tens of millions of kilometers away. Therefore it will take several years for light to reach our eyes. Therefore, what we saw just now has already taken place  several years before. Similarly sun has rose 8 minutes 30 seconds prior to when we see it. 

2)If the rays of light meet our eyes before other eyes,we can see the event before others.
We see an event when the light rays from the event enter the retina of our eyes. Now when we are going in a spaceship and we are on the path that light has taken from the nebula to the Earth. Therefore, light from the nebula will reach our eyes. This means that we will see the nebula, however the people on Earth won't be able to see this nebula.

3) Can someone see an event two times?
Now,let us imagine that we turn when we see the nebula. Now if we travel with light (at its speed), towards the Earth, then we will reach Earth before the rays of light. Therefore, this means that we can see the nebula again when we reach Earth.

4) Seeing something two times is time travel.
Everything in this world happens once. We a particular nebula's sight only once. However, if you see it twice than you seen it, once before it has taken place and the other time when it takes place. Therefore, we were there at the moment when an event has not taken place and still we saw it. This means that we have seen the future. Hence, we have time traveled.

5) CONCLUSION- We Can Time Travel If We Can Travel At More Speed Than Light.
In the above point I have proved that we can time travel, but there is always one condition to every big invention. Here, it is that you need travel at a speed which is higher than light's speed. But why? As I told you in the 3rd point that we will see it two times only if we travel towards the Earth with light or faster than light.
Therefore, we can time travel if we invent a vehicle which can travel at a higher speed than light!!!!!!!Now just tell me what could be more fascinating than that!!!

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