2006-08-28 05:52:48 · 23 answers · asked by themanwithnoname 2 in Science & Mathematics ➔ Physics
They said the sound barrier was impossible to break.
2006-08-28 05:59:57 · answer #1 · answered by Ironball 7 · 0⤊ 2⤋
If you mean time travel as in travelling backwards in time then this is and always will be an impossibility. If it were possible we would have had countless interactions with people from the future already. It would be too big to cover up.
The speed of light is what light takes to reach a certain point, it is not the speed of the universe as someone else said. Travelling faster than light will one day be possible but as for this entailing time travel, who could possibly know as no-one has ever done it. It is all theory..........
Thenagain, maybe the UFO sightings we have are people coming back from the future....
The mind boggles trying to take it all in...
Graham
2006-08-28 13:04:52 · answer #2 · answered by the truth 3 · 0⤊ 0⤋
Well, time travel is possible right now to move into the future. It is known as time dilation. As your speed increases, the passage of time for you decreases. You do not need to even reach the speed of light. In fact, this has been proven experimentally with two atomic clocks. One was placed on the top of a mountain and the other at the base of the mountain. After some time had elapsed, the clock at the peak had fallen behind the clock at the base. Because the clock at the peak was moving faster (farther away from the Earth's axis of rotation), time moved more slowly for it. Thus, if you were to travel at a high rate of speed, you could essentially jump into the future.
2006-08-28 13:05:57 · answer #3 · answered by Cody W 3 · 0⤊ 0⤋
faster than light travel of masseous objects will never happen, so i guess THAT answers your question. HOWEVER, there are theories on how to "jump" from one place to another in the universe without travelling faster than the speed of light and i personally believe that this will occur before time travel (if time travel is even possible)
2006-08-28 12:57:03 · answer #4 · answered by promethius9594 6 · 0⤊ 0⤋
We already have observed faster than light travel. It is responsible for the blue glow of cerenkov radiation in fission reactors! Travelling in time (as someone else said) is also achieved and is what we are all doing right now.
However, to travel faster than light in a vacuum is impossible because your mass will increase infinitely, and time will slow (for anyone measuring your speed) to a standstill at the point you hit the speed of light. Travel backwards in time is also impossible due to the paradoxes that would be created (such as killing yourself). If it were possible, we would have met someone from the future already who could tell us how it's done (and how to go faster than light too no doubt).
So, it's a choice of 2 impossible things.... tricky!
2006-08-28 14:10:58 · answer #5 · answered by Tryptamine Blue 1 · 0⤊ 0⤋
The speed of light is absolute, nothing can exceed it. In theory, If you start out as a young person to explore the universe at the speed of light and travel for fifty years, upon your return to earth it would be rocky cinder. Our sun would have gone through it's life's cycle and have gone nova, destroying all life on earth. The reason being that when one travels at the speed of light, mechanical time slows down. In essence, what one does is time travel into the future.
2006-08-28 13:09:12 · answer #6 · answered by Anonymous · 0⤊ 0⤋
theoretically speaking all you need to time travel is to move at a relative velocity w.r.t someone and you r traveling in time w.r.t that person.....we all live in four dimensional space-time and every time we move we not only travel in space but also in time....since the speed of light is so fast the phenomenon only becomes visible at very very high speeds but we have all been time traveling for quite some time now.......a set of very accurate watches will measure different time on top of mount Everest as compared to sea level....this slowing of time is taken into account when launching and designing Geo synchronous satellites....of course traveling faster than light is a totally different issue because that can make you travel in the past.....that is yet to happen.....and if Einstein is to be believed it will never happen
2006-08-29 09:45:52 · answer #7 · answered by kaushal 1 · 0⤊ 0⤋
to travel at the speed of light IS travelling in time well according to einstein. but he also says that nothing can go faster than the speed of light
2006-08-28 13:15:24 · answer #8 · answered by zinc 1977 2 · 0⤊ 0⤋
None. Take my word for it. but imaginig I would say light speed travel cuz time travel requires speed of light to jump from the past to the future.but it will never happen.
2006-08-28 12:58:15 · answer #9 · answered by Hasnain R 2 · 0⤊ 0⤋
While light travels for a billion years, gravity is already there. So gravity is already into the future where light has yet to arrive!
2006-08-28 13:22:37 · answer #10 · answered by Anonymous · 0⤊ 0⤋
I believe you imaginary travel would come out first and even faster than both.
2006-08-28 13:05:04 · answer #11 · answered by MenudoPie 3 · 0⤊ 0⤋