2006-11-13 05:18:51 · 13 answers · asked by Sniper18_83 1 in Science & Mathematics ➔ Astronomy & Space
Time travelling is a very difficult topic.
You can supposedly travel into the past if you travel faster than the speed of light but this involves getting a source of infinite energy as when matter gets closer and closer to the speed of light its mass will dramatically increase.
This is said to be very unlikely but general relativity says it may be possible on highly unusual circumstances.
Wormholes, permitted by general relativity, could be possible only if it is traversable.
If you read general relativity and objects at speed of light you get time, space and gravity based dilations where light appears to be bent by gravity and arrives at an object at different times.
Yet again the object has to be travelling at 0.99c or faster!!
I says time travel will never happens but i wish it would.
2006-11-13 05:21:08 · answer #1 · answered by Oz 4 · 0⤊ 0⤋
Travelling forward: yes.
Travelling backward: I do not believe so... but I reserve the right to be wrong. :)
Travelling forward is a simple concept. One needs a gravity well... such as a large star, or black hole, which warps time and slows it down relative to time here on earth. If one were to fly a spaceship (which we hope, in the future, can be designed to withstand all the forces and radiation it will be subjected to when flying around the sun, and fly into the sun's atrmosphere in order to be slowed by the sun's gravity, then relatively speaking, time on that spaceship would be slowed relative to time on earth. Therefore, if it took 2 years to make this trip, then hundreds to thousands of years will have passed on earth in the same amount of absolute time.
This is fact, and can be proven with experimentation. Basically this is Einstein's theory of relativity put into action. :)
Travelling backward in time assumes that the universe is a circle and not a sphere, and that time occurs in an infinite loop. Therefore, if one can travel forward in the same way that was exampled above, but at a much slower pace around the sun, then one can loop time completely to re-enter space at a time within the loop that is in the past relative to the time that one took off on this spaceship.
This is astrophysical and quantum theory... and such theories abound, and no one theory seems better than another.
2006-11-13 13:31:46 · answer #2 · answered by Curtis B 2 · 0⤊ 0⤋
Give us some "time" to figure that one out. You have to remember that humans are new creatures in the long age of the universe that have only recently become technology savy. This is only the beginning. How long have we been using computers based on chip technology? Not even 100 years. So, time travel may seem absurd to us now but in time another Einstein may come along and show us the way. We've only been flying airplanes for 100 years and been traveling in space for about 50.
2006-11-13 16:50:00 · answer #3 · answered by timespiral 4 · 0⤊ 0⤋
Nothing is impossible. Improbable, maybe. But not impossible. I can think of two ways we can all time travel right now without the use of machines. Memories of the past can serve as vehicles of time travel. Your mind does not know the difference between what is actually being presented to you, or what is stored in memories. This is the reason you can always smell your mom's cooking when you think abou it. Or you can feel your childhood's pet fur when you think about him/her. History books (whether you choose to believe them or not) can also serve as a vehicle for time travel. But an actuall time travel machine can be invented once we harness exotic energies and quantum mechanics. As others have stated, all you need is a few Cesium clocks (for the timing mechanism), a machine can produce, keep stable and manipulate two miniature Kerr black holes so as to create the actuall "warp" in time.
2006-11-13 13:43:14 · answer #4 · answered by gleemonex69 3 · 0⤊ 0⤋
Never, because time travel is just fantasy science fiction.
You see, time is just a mathematical measurement created by humans to measure the events of celestial movements.
Since time is just that, the events that have occured can not be rewound or repeated, because they are of a physical nature.
Also, two bodies cannot occupy the same space at the same time.
Also, if at anytime in the future, no matter how far away in time, time travel where posible (just to mention it ) and they could travel to the past ( hypothedicly ), then wouldn't thair be evidence in the past of someone from the future who was able to travel, no such evidence exist in our past or present of such a happenning.
Sooo, you see, physicaly you cannot travel to the past, allthough you cirtainly can see the past, ( what you see in the universe is the past ) by the time you reach it, you would be in its present time.
2006-11-13 17:41:20 · answer #5 · answered by Anonymous · 0⤊ 0⤋
If time travel would work in the future,it would be working now!
2006-11-14 07:37:53 · answer #6 · answered by Billy Butthead 7 · 0⤊ 0⤋
If time travel were possible, we would already have it. Because human nature is such that someone who used it would used it for malevolent purposes, it would end up being found out by everyone.
2006-11-13 13:27:10 · answer #7 · answered by Uther Aurelianus 6 · 0⤊ 0⤋
Aren't you travelling into the future right now?
2006-11-13 13:23:28 · answer #8 · answered by Anonymous · 1⤊ 0⤋
it does, i am from there, i just come back for the hot pockets and chicken pot pie, there is none of things in the future, well im off, have to fuel up my flux capasitor
2006-11-13 13:27:36 · answer #9 · answered by Anonymous · 0⤊ 0⤋
IThe only way i can envision it would be by having your body frozen, then revived later. Of course it's a one way trip.
2006-11-13 13:27:47 · answer #10 · answered by robert2020 6 · 0⤊ 0⤋