Im sure most of us as kids have wondered at some point in our lives "Which is the farthest star? And what lies beyond the farthest star?".To answer these questions,astronomers programmed the hubble space telescope to take snapshots of the farthest point in the universe.It turned out that these stars were approximately 13.7 billion light years away from our planet.This means,light which started off from these stars 13.7 billion light years back is now finally reaching our earth.This is approximately when the big bang actually took place(13.7 billion years ago).
So what this could mean is that we can actually see the childhood of the evolution of our universe.Whatever i typed till now,was picked from the book "Parallel Worlds" by Michio Kaku.
And it was important to mention it in this blog,because the message which i shall now try to deliver is related to the above provided facts.
For those who know,light is the fastest known form of matter/energy/whatever u classify it as.
A light beam has a velocity of 300000000m/s².Suppose you start moving faster than light.Then you would be in the future.Because,when u move faster than light,you are ahead of time and you can actually see the events happen as time passes,i.e till the light speed catches up with your's.
So then suppose we start off from the earth and move into space at a speed much faster than that of light.Then we can actually observe the continuous evolution of earth since you left it.Maybe this could help us move back in time too.Say suppose you start moving faster than light,in the direction of the oldest star,which is 13.7 light years away.That means u shall take less than 13.7 billion years to reach it,since you are moving faster than light.That would mean you actually went back in time,right????
Also,since light from a star 13.7 billion light years is now reaching us,it could be possible that many of the other things we observe are actually of the past and not currently happening.What I'm trying to say is that what if light doesn't always travel in a straight line????There would then be a delay involved in the time it would take to reach the observers eye.
Here's a weird example,but on the same lines(i hope I'm making sense):-When you watch a cricket match on television,you see the live match.But this match actually reaches the viewers television a few seconds after it actually takes place right?This is so because the transmitted signal takes some time to be transmitted.So what u feel is LIVE is actually the past(by a few seconds).Similar maybe the case with many other activities in our lives.Ok this point isn't really strong enough,but its just a thought i had and so i felt I'd share it.
Anyways the other stuff did make sense i feel,like the time travel part.Maybe many people must've had these ideas before.
Tuesday, November 6, 2007
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4 comments:
Quite informative and thought provoking.But this is exactly what the theory of relativity says right.And yeah...its quite interesting to know that the things we see depend upon when the light reaches the observers eye...in other words, time loses its meaning... nice article.
wow thats an interesting analogy of time travel, well done
keep writing !
gud enough....i liked the idea of thinking so much of wat lies beyondddddd the star..
i m agog to 2 peep into my future nw...an informative article ...i should say..well done..
nice one. very valid, everything is. but you speak of "seeing the past". if you travel faster than light, that is, faster than photons, you won't be able to really "see" anything would you? similar problem happens when people travel faster than sound. you can't really "hear" anything at supersonic speeds, cos u travel farther than the sound waves in the same amount of time.
think about it and let me know...
not to be a wet blanket here, but it has been proved beyond doubt that nothing can travel faster than light, am i right?
cheers on an excellently thought out piece though!
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